Question 1

When its brakes are applied, a car moving at 10 m/s undergoes an acceleration of -1.2 m/s2. How far does the car travel before it comes to a stop?

Accepted Answer

A)  42 m 
B)  78 m 
C)  83 m 
D)  124 m 
A)  42 m 
B)  78 m 
C)  83 m 
D)  124 m

Question 2

A force that gives a 2-kg object an acceleration of 1.6 m/s2 would give an 8-kg object an acceleration of

Accepted Answer

A)  0.2 m/s2. 
B)  0.4 m/s2. 
C)  1.6 m/s2. 
D)  6.4 m/s2. 
A)  0.2 m/s2. 
B)  0.4 m/s2. 
C)  1.6 m/s2. 
D)  6.4 m/s2.

Question 3

A stone dropped from a cliff reaches the ground in 4 s. The stone's speed is then

Accepted Answer

A)  10 m/s. 
B)  40 m/s. 
C)  196 m/s. 
D)  392 m/s. 
A)  10 m/s. 
B)  40 m/s. 
C)  196 m/s. 
D)  392 m/s.

Question 4

A hole is drilled to the center of the earth and a ball is dropped into it. When the ball is at the earth's center, compared with their respective values at the earth's surface,

Accepted Answer

A)  its mass and weight are the same. 
B)  its mass and weight are both 0. 
C)  its mass is the same and its weight is 0. 
D)  its weight is the same and its mass is 0. 
A)  its mass and weight are the same. 
B)  its mass and weight are both 0. 
C)  its mass is the same and its weight is 0. 
D)  its weight is the same and its mass is 0.

Question 5

If the moon were half as far from the earth as it is now, the gravitational force it exerts on the earth would be

Accepted Answer

A)  one-quarter its present value. 
B)  half its present value. 
C)  twice its present value. 
D)  four times its present value. 
A)  one-quarter its present value. 
B)  half its present value. 
C)  twice its present value. 
D)  four times its present value.

Question 6

A force of 2 N acts on a 2-kg object, initially at rest, for 2 s. During that time the object moves a distance of

Accepted Answer

A)  1 m. 
B)  2 m. 
C)  4 m. 
D)  8 m. 
A)  1 m. 
B)  2 m. 
C)  4 m. 
D)  8 m.

Question 7

The sun exerts a gravitational force on the earth and the earth exerts a gravitational force on the sun. The force the earth exerts

Accepted Answer

A)  is the action force. 
B)  is the reaction force. 
C)  can be considered either as the action or as the reaction force. 
D)  is not part of an action-reaction pair because the earth and sun are not in contact with each other. 
A)  is the action force. 
B)  is the reaction force. 
C)  can be considered either as the action or as the reaction force. 
D)  is not part of an action-reaction pair because the earth and sun are not in contact with each other.

Question 8

A bullet is fired upward. As it rises,

Accepted Answer

A)  its mass and weight remain the same. 
B)  its mass and weight decrease. 
C)  its mass remains the same while its weight decreases. 
D)  its mass decreases while its weight remains the same. 
A)  its mass and weight remain the same. 
B)  its mass and weight decrease. 
C)  its mass remains the same while its weight decreases. 
D)  its mass decreases while its weight remains the same.

Question 9

Which of the following units could be associated with a vector quantity?

Accepted Answer

A)  km/s2. 
B)  kg/s. 
C)  hours. 
D)  m3. 
A)  km/s2. 
B)  kg/s. 
C)  hours. 
D)  m3.

Question 10

A car starts from a speed of 10 m/s with an acceleration of 2 m/s2. The time needed for the car to reach 30 m/s is

Accepted Answer

A)  10 s. 
B)  20 s. 
C)  30 s. 
D)  40 s. 
A)  10 s. 
B)  20 s. 
C)  30 s. 
D)  40 s.

Question 11

A crane exerts an upward force of 200 N on a 20-kg crate. The crate's upward acceleration is

Accepted Answer

A)  0. 
B)  0.2 m/s2. 
C)  10 m/s2. 
D)  98 m/s2. 
A)  0. 
B)  0.2 m/s2. 
C)  10 m/s2. 
D)  98 m/s2.

Question 12

An airplane reaches its takeoff speed of 60 m/s in 30 s starting from rest. The time it spends in going from 40 m/s to 60 m/s is

Accepted Answer

A)  10 s. 
B)  15 s. 
C)  20 s. 
D)  25 s. 
A)  10 s. 
B)  15 s. 
C)  20 s. 
D)  25 s.

Question 13

A 50-kg person weighs

Accepted Answer

A)  5.1 N. 
B)  23 N. 
C)  110 N. 
D)  490 N. 
A)  5.1 N. 
B)  23 N. 
C)  110 N. 
D)  490 N.

Question 14

In 6 min a person running at 10 km/h covers a distance of

Accepted Answer

A)  167 m. 
B)  600 m. 
C)  1000 m. 
D)  1667 m. 
A)  167 m. 
B)  600 m. 
C)  1000 m. 
D)  1667 m.

Question 15

A woman whose mass is 60 kg on the earth's surface is in a spacecraft at a height of 2 earth radii above the earth's surface. Her mass there is

Accepted Answer

A)  6.7 kg. 
B)  15 kg. 
C)  20 kg. 
D)  60 kg. 
A)  6.7 kg. 
B)  15 kg. 
C)  20 kg. 
D)  60 kg.

Question 16

The idea that all conclusions about the natural world must be based upon experiment and observation was first emphasized in the work of

Accepted Answer

A)  Aristotle. 
B)  St. Thomas Aquinas. 
C)  Galileo. 
D)  Newton. 
A)  Aristotle. 
B)  St. Thomas Aquinas. 
C)  Galileo. 
D)  Newton.

Question 17

Which of the following sets of displacements might be able to return a car to its starting point?

Accepted Answer

A)  2, 8, 10, and 25 km. 
B)  5, 20, 35, and 65 km. 
C)  60, 120, 180, and 240 km. 
D)  100, 100, 100, and 400 km. 
A)  2, 8, 10, and 25 km. 
B)  5, 20, 35, and 65 km. 
C)  60, 120, 180, and 240 km. 
D)  100, 100, 100, and 400 km.

Question 18

A 1200-kg car is traveling at 10 m/s on a road such that the maximum frictional force between its tires and the road is 4000 N. The minimum turning radius of the car is

Accepted Answer

A)  15 m. 
B)  30 m. 
C)  60 m. 
D)  120 m. 
A)  15 m. 
B)  30 m. 
C)  60 m. 
D)  120 m.

Question 19

A 500-g ball moves in a circle 40 cm in radius at a speed of 4 m/s. The centripetal force on the ball is

Accepted Answer

A)  10 N. 
B)  20 N. 
C)  40 N. 
D)  80 N. 
A)  10 N. 
B)  20 N. 
C)  40 N. 
D)  80 N.

Question 20

A stone is thrown upward from a roof at the same time as another, identical stone is dropped from there. The two stones

Accepted Answer

A)  reach the ground at the same time. 
B)  have the same speed when they reach the ground. 
C)  have the same acceleration when they reach the ground. 
D)  None of the choices are correct. 
A)  reach the ground at the same time. 
B)  have the same speed when they reach the ground. 
C)  have the same acceleration when they reach the ground. 
D)  None of the choices are correct.

When its brakes are applied, a car moving at 10 m/s undergoes an acceleration of -1.2 m/s². How far does the car travel before it comes to a stop?

A force that gives a 2-kg object an acceleration of 1.6 m/s² would give an 8-kg object an acceleration of

A stone dropped from a cliff reaches the ground in 4 s. The stone's speed is then

A hole is drilled to the center of the earth and a ball is dropped into it. When the ball is at the earth's center, compared with their respective values at the earth's surface,

If the moon were half as far from the earth as it is now, the gravitational force it exerts on the earth would be

A force of 2 N acts on a 2-kg object, initially at rest, for 2 s. During that time the object moves a distance of

The sun exerts a gravitational force on the earth and the earth exerts a gravitational force on the sun. The force the earth exerts

A bullet is fired upward. As it rises,

Which of the following units could be associated with a vector quantity?

A car starts from a speed of 10 m/s with an acceleration of 2 m/s². The time needed for the car to reach 30 m/s is

A crane exerts an upward force of 200 N on a 20-kg crate. The crate's upward acceleration is

An airplane reaches its takeoff speed of 60 m/s in 30 s starting from rest. The time it spends in going from 40 m/s to 60 m/s is

A 50-kg person weighs

In 6 min a person running at 10 km/h covers a distance of

A woman whose mass is 60 kg on the earth's surface is in a spacecraft at a height of 2 earth radii above the earth's surface. Her mass there is

The idea that all conclusions about the natural world must be based upon experiment and observation was first emphasized in the work of

Which of the following sets of displacements might be able to return a car to its starting point?

A 1200-kg car is traveling at 10 m/s on a road such that the maximum frictional force between its tires and the road is 4000 N. The minimum turning radius of the car is

A 500-g ball moves in a circle 40 cm in radius at a speed of 4 m/s. The centripetal force on the ball is

A stone is thrown upward from a roof at the same time as another, identical stone is dropped from there. The two stones

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Exam 2: Motion

When its brakes are applied, a car moving at 10 m/s undergoes an acceleration of -1.2 m/s2. How far does the car travel before it comes to a stop?

A force that gives a 2-kg object an acceleration of 1.6 m/s2 would give an 8-kg object an acceleration of

A stone dropped from a cliff reaches the ground in 4 s. The stone's speed is then

A hole is drilled to the center of the earth and a ball is dropped into it. When the ball is at the earth's center, compared with their respective values at the earth's surface,

If the moon were half as far from the earth as it is now, the gravitational force it exerts on the earth would be

A force of 2 N acts on a 2-kg object, initially at rest, for 2 s. During that time the object moves a distance of

The sun exerts a gravitational force on the earth and the earth exerts a gravitational force on the sun. The force the earth exerts

A bullet is fired upward. As it rises,

Which of the following units could be associated with a vector quantity?

A car starts from a speed of 10 m/s with an acceleration of 2 m/s2. The time needed for the car to reach 30 m/s is

A crane exerts an upward force of 200 N on a 20-kg crate. The crate's upward acceleration is

An airplane reaches its takeoff speed of 60 m/s in 30 s starting from rest. The time it spends in going from 40 m/s to 60 m/s is

A 50-kg person weighs

In 6 min a person running at 10 km/h covers a distance of

A woman whose mass is 60 kg on the earth's surface is in a spacecraft at a height of 2 earth radii above the earth's surface. Her mass there is

The idea that all conclusions about the natural world must be based upon experiment and observation was first emphasized in the work of

Which of the following sets of displacements might be able to return a car to its starting point?

A 1200-kg car is traveling at 10 m/s on a road such that the maximum frictional force between its tires and the road is 4000 N. The minimum turning radius of the car is

A 500-g ball moves in a circle 40 cm in radius at a speed of 4 m/s. The centripetal force on the ball is

A stone is thrown upward from a roof at the same time as another, identical stone is dropped from there. The two stones

The Scientific Method

Energy

Energy and the Future

Matter and Heat

Electricity and Magnetism

Waves

The Nucleus

The Atom

The Periodic Law

Crystals, Ions, and Solutions

Chemical Reactions

Organic Chemistry

Atmosphere and Hydrosphere

The Rock Cycle

The Evolving Earth

The Solar System

The Stars

The Universe Galaxies

Filters

When its brakes are applied, a car moving at 10 m/s undergoes an acceleration of -1.2 m/s². How far does the car travel before it comes to a stop?

A force that gives a 2-kg object an acceleration of 1.6 m/s² would give an 8-kg object an acceleration of

A car starts from a speed of 10 m/s with an acceleration of 2 m/s². The time needed for the car to reach 30 m/s is