 # Chapter 4 Exam Review

`Honors Physical Science Chapter 4 Exam Review`
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`True/False`
`Indicate whether the statement is true or false.`
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`____         1.       Balanced forces acting on an object cause the object to accelerate.`
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`____         2.       Gravity causes all falling objects to accelerate at a rate of 98 m/s2.`
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`____         3.       Acceleration is defined as the rate of change of position.`
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`____         4.       The momentum of a 5,000-kg truck that is standing still is greater than the momentum of a 3,000-kg truck that is also at rest.`
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`____         5.       The projectile velocity is the highest velocity that will be reached by a falling object.`
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`____         6.       When an object falls, it is reacting to the force of gravity.`
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`____         7.       Jane is on a merry-go-round that is moving at a constant speed. Her velocity is also constant.`
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`____         8.       Momentum is a property of an object and cannot be transferred from that object to another object.`
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`____         9.       Objects in Earth's orbit appear to be weightless because they are in free fall.`
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`____         10.     Friction is a force that encourages motion between two surfaces that are touching each other.`
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`Multiple Choice`
`Identify the choice that best completes the statement or answers the question.`
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`____         11.      The upward force on an object falling through the air is ____.`
 `a.` `air resistance` `c.` `momentum` `b.` `inertia` `d.` `terminal velocity`
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`____         12.     The relationship among mass, force, and acceleration is explained by ____.`
 `a.` `conservation of momentum` `b.` `Newton's first law of motion` `c.` `Newton's second law of motion` `d.` `Newton's third law of motion`
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`____         13.     A feather will fall through the air more slowly than a brick because of ____.`
 `a.` `air resistance` `c.` `inertia` `b.` `gravity` `d.` `momentum`
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`____         14.     In the absence of air, a penny and a feather that are dropped from the same height at the same time will ____.`
 `a.` `fall at different rates` `c.` `float` `b.` `fall at the same rate` `d.` `not have momentum`
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`____         15.     The acceleration due to gravity is ____.`
 `a.` `98 m/s2` `c.` `9.8 m/s` `b.` `9.8 m/s2` `d.` `0.98 m/s`
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`____         16.     According to Newton's second law of motion, ____.`
 `a.` `F = m · a` `c.` `F = p · a` `b.` `F = m · v` `d.` `F = p · v`
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`____         17.     When an object moves in a circular path, it accelerates toward the center of the circle as a result of ____.`
 `a.` `centripetal force` `c.` `gravitational force` `b.` `frictional force` `d.` `momentum`
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`____         18.     The path of a projectile is ____.`
 `a.` `curved` `c.` `always vertical` `b.` `always horizontal` `d.` `straight`
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`____         19.     For any object, the greater the force that's applied to it, the greater its ____ will be.`
 `a.` `acceleration` `c.` `inertia` `b.` `gravity` `d.` `velocity`
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`____         20.     The size of the gravitational force between two objects depends on their ____.`
 `a.` `frictional forces` `b.` `inertia` `c.` `masses and the distance between them` `d.` `speed and direction`
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`____         21.     As you get farther from the center of Earth, your weight will ____.`
 `a.` `decrease` `c.` `remain the same` `b.` `increase` `d.` `can't tell from information given`
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`____         22.     When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called ____ forces.`
 `a.` `action-reaction` `c.` `frictional` `b.` `centripetal` `d.` `gravitational`
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`____         23.     A real car moving at 10 km/h has more momentum than a toy car moving at the same speed because the real car ____.`
 `a.` `generates less friction` `b.` `has greater mass` `c.` `has less mass` `d.` `has greater forward motion`
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`____         24.     In the equation p = m · v, the p represents ____.`
 `a.` `friction` `c.` `momentum` `b.` `inertia` `d.` `position`
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`____         25.     The statement "to every action there is an equal and opposite reaction" is ____.`
 `a.` `the law of conservation of momentum` `b.` `Newton's first law of motion` `c.` `Newton's second law of motion` `d.` `Newton's third law of motion`
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`____         26.     The unit of momentum is ____.`
 `a.` `kg · m` `c.` `kg · m/s2` `b.` `kg · m/s` `d.` `m/s2`
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`____         27.     When two balls collide, the momentum of the balls after the collision is explained by ____.`
 `a.` `the law of conservation of momentum` `b.` `Newton's first law of motion` `c.` `Newton's second law of motion` `d.` `Newton's third law of motion`
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`____         28.     A 300-N force acts on a 25-kg object. The acceleration of the object is ____.`
 `a.` `7,500 m/s2` `c.` `25 m/s2` `b.` `300 m/s2` `d.` `12 m/s2`
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`____         29.     A 3,000-N force acts on a 200-kg object. The acceleration of the object is ____.`
 `a.` `50 m/s2` `c.` `15 m/s2` `b.` `26 m/s2` `d.` `150 m/s2`
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`____         30.     An object that is in free fall seems to be ____.`
 `a.` `not moving` `b.` `slowed by air resistance` `c.` `speeded up by air resistance` `d.` `weightless`
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`____         31.     If gravity did NOT affect the path of a horizontally thrown ball, the ball would ____.`
 `a.` `go straight up` `b.` `fall straight down` `c.` `follow a curved path` `d.` `travel horizontally`
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`Figure 3-1`
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`____         32.     A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. Assume the string breaks at point A. In which direction will the ball be traveling an instant later?`
 `a.` `direction a` `c.` `direction c` `b.` `direction b` `d.` `direction d`
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`____         33.     A ball attached to a string is being swung in a clockwise circular path as shown in Figure 3-1. In which direction will the acceleration on the ball be when the ball passes point A?`
 `a.` `direction a` `c.` `direction c` `b.` `direction b` `d.` `direction d`
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`Honors Physical Science Chapter 4 Exam Review`
`Answer Section`
` `
`TRUE/FALSE`
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`       1.                 ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  1/3     STA:           PS1.1 CS2.1                     `
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`       2.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/2    STA:           PS1.1 CS2.1                     `
` `
`       3.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  1/3     STA:           PS1.1 CS2.1                     `
` `
`       4.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/2    STA:           PS1.1 CS2.1                     `
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`       5.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/4    STA:           PS1.1 CS2.1                     `
` `
`       6.                ANS: T                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/1     STA:           PS1.1 CS2.1                     `
` `
`       7.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge II`
`OBJ:                  1/1     STA:           PS1.1 CS2.1                     `
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`       8.                ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/4    STA:           PS1.1 CS2.1                     `
` `
`       9.                ANS: T                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/2    STA:           PS1.1 CS2.1                     `
` `
`       10.               ANS: F                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  1/2     STA:           PS1.1 CS2.1                     `
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`MULTIPLE CHOICE`
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`       11.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/1     STA:           PS1.1 CS2.1                     `
` `
`       12.               ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/3    STA:           PS1.1 CS2.1                     `
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`       13.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/1     STA:           PS1.1 CS2.1                     `
` `
`       14.               ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  1/3     STA:           PS1.1 CS2.1                     `
` `
`       15.               ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/1     STA:           PS1.1 CS2.1                     `
` `
`       16.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  1/3     STA:           PS1.1 CS2.1                     `
` `
`       17.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/4    STA:           PS1.1 CS2.1                     `
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`       18.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/3    STA:           PS1.1 CS2.1                     `
` `
`       19.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  1/4     STA:           PS1.1 CS2.1                     `
` `
`       20.              ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/1     STA:           PS1.1 CS2.1                     `
` `
`       21.               ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  2/1     STA:           PS1.1 CS2.1                     `
` `
`       22.              ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/2    STA:           PS1.1 CS2.1                     `
` `
`       23.              ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/4    STA:           PS1.1 CS2.1                     `
` `
`       24.              ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/3    STA:           PS1.1 CS2.1                     `
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`       25.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/1     STA:           PS1.1 CS2.1                     `
` `
`       26.              ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/3    STA:           PS1.1 CS2.1                     `
` `
`       27.              ANS: A                PTS:   1                  DIF:  Webb's Depth of Knowledge I`
`OBJ:                  3/4    STA:           PS1.1 CS2.1                     `
` `
`       28.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II`
`OBJ:                  1/4     STA:           PS1.1 CS2.1                     `
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`       29.              ANS: C                 PTS:   1                  DIF:  Webb's Depth of Knowledge II`
`OBJ:                  1/4     STA:           PS1.1 CS2.1                     `
` `
`       30.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II`
`OBJ:                  2/2    STA:           PS1.1 CS2.1                     `
` `
`       31.               ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II`
`OBJ:                  2/3    STA:           PS1.1 CS2.1                     `
` `
`       32.              ANS: D                PTS:   1                  DIF:  Webb's Depth of Knowledge II`
`OBJ:                  1/1     STA:           PS 1.1 CS2.2                    `
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`       33.              ANS: B                 PTS:   1                  DIF:  Webb's Depth of Knowledge II`
`OBJ:  1/1     STA:  PS1.1 CS2.1`