Question 1

What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?

Accepted Answer

A) 0 m/s2 
B) 10 km/h/s 
C) 10 m/s2 
D) 1000 km/h/s 
A) 0 m/s2 
B) 10 km/h/s 
C) 10 m/s2 
D) 1000 km/h/s A

Question 2

Which has zero acceleration?

Accepted Answer

A) an object at rest 
B) an object moving at constant velocity 
C) an object in mechanical equilibrium 
D) all of the above 
E) none of the above 
A) an object at rest 
B) an object moving at constant velocity 
C) an object in mechanical equilibrium 
D) all of the above 
E) none of the above D

Question 3

A car accelerates from rest at 2 m/s2. What is its speed 3 s after the car starts moving?

Accepted Answer

A) 2 m/s 
B) 3 m/s 
C) 4 m/s 
D) 6 m/s 
E) none of the above 
A) 2 m/s 
B) 3 m/s 
C) 4 m/s 
D) 6 m/s 
E) none of the above D

Question 4

It takes 6 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft?

Accepted Answer

A) about 60 m 
B) about 120 m 
C) about 180 m 
D) more than 200 m 
A) about 60 m 
B) about 120 m 
C) about 180 m 
D) more than 200 m

Question 5

Drop a rock from a 5-m height and it accelerates at 10 m/s2 and strikes the ground 1 s later. Drop the same rock from a height of 2.5 m and its acceleration of fall is

Accepted Answer

A) about half. 
B) the same. 
C) twice as much. 
A) about half. 
B) the same. 
C) twice as much.

Question 6

Whereas Aristotle relied on logic in explaining nature, Galileo relied on

Accepted Answer

A) observation. 
B) patterns. 
C) experiment. 
D) mathematics. 
A) observation. 
B) patterns. 
C) experiment. 
D) mathematics.

Question 7

Density is the ratio of

Accepted Answer

A) weight to volume. 
B) mass to volume. 
C) mass to weight. 
D) weight to mass. 
A) weight to volume. 
B) mass to volume. 
C) mass to weight. 
D) weight to mass.

Question 8

Distinguish between velocity and acceleration, and apply each to a ball tossed straight upward.

Accepted Answer

Velocity has to do with how fast a body

Question 9

Compared with the mass of a certain object on Earth, the mass of the same object on the Moon is

Accepted Answer

A) less. 
B) more. 
C) the same. 
A) less. 
B) more. 
C) the same.

Question 10

An object travels 8 m in the 1st second of travel, 8 m again during the 2nd second of travel, and 8 m again during the 3rd second. Its acceleration is therefore

Accepted Answer

A) 0 m/s2. 
B) 5 m/s2. 
C) 8 m/s2. 
D) 10 m/s2. 
E) more than 10 m/s2. 
A) 0 m/s2. 
B) 5 m/s2. 
C) 8 m/s2. 
D) 10 m/s2. 
E) more than 10 m/s2.

Question 11

If a baseball being thrown goes from zero to 30 m/s in 0.1 s, what is its average acceleration?

Accepted Answer

A) 3 m/s2 
B) 30 m/s2 
C) 300 m/s2 
D) 3000 m/s2 
E) none of the above 
A) 3 m/s2 
B) 30 m/s2 
C) 300 m/s2 
D) 3000 m/s2 
E) none of the above

Question 12

An object is in free fall. At one instant, it travels at a speed of 50 m/s. Exactly 1 s later, its speed is about

Accepted Answer

A) 25 m/s. 
B) 50 m/s. 
C) 55 m/s. 
D) 60 m/s. 
E) 100 m/s. 
A) 25 m/s. 
B) 50 m/s. 
C) 55 m/s. 
D) 60 m/s. 
E) 100 m/s.

Question 13

A 1-kg mass at Earth's surface weighs about

Accepted Answer

A) 1 N. 
B) 5 N. 
C) 10 N. 
D) 12 N. 
E) none of the above 
A) 1 N. 
B) 5 N. 
C) 10 N. 
D) 12 N. 
E) none of the above

Question 14

While a car travels around a circular track at constant speed, its

Accepted Answer

A) acceleration is zero. 
B) velocity is zero. 
C) both A and B 
D) none of the above 
A) acceleration is zero. 
B) velocity is zero. 
C) both A and B 
D) none of the above

Question 15

If a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s2, then its speed reading would increase each second by

Accepted Answer

A) 10 m/s. 
B) 20 m/s. 
C) 30 m/s. 
D) 40 m/s. 
E) depends on its initial speed 
A) 10 m/s. 
B) 20 m/s. 
C) 30 m/s. 
D) 40 m/s. 
E) depends on its initial speed

Question 16

Starting from rest, the distance a freely falling object will fall in 0.5 s is about

Accepted Answer

A) 0)5 m. 
B) 1)0 m. 
C) 1)25 m. 
D) 5)0 m. 
E) none of the above 
A) 0)5 m. 
B) 1)0 m. 
C) 1)25 m. 
D) 5)0 m. 
E) none of the above

Question 17

One object has twice as much mass as another object, and also has twice as much

Accepted Answer

A) inertia. 
B) velocity. 
C) gravitational acceleration. 
D) volume. 
E) all of the above 
A) inertia. 
B) velocity. 
C) gravitational acceleration. 
D) volume. 
E) all of the above

Question 18

The scientist to first introduce the concept of inertia was

Accepted Answer

A) Aristotle. 
B) Galileo. 
C) Newton. 
D) Copernicus. 
A) Aristotle. 
B) Galileo. 
C) Newton. 
D) Copernicus.

Question 19

In which of the following locations would a chunk of gold weighing 1 N have the largest mass?

Accepted Answer

A) the Moon 
B) Earth 
C) the planet Jupiter 
A) the Moon 
B) Earth 
C) the planet Jupiter

Question 20

Which direction does a table push a book resting on it?

Accepted Answer

A) up 
B) left 
C) right 
D) down 
A) up 
B) left 
C) right 
D) down

Exam 2: Describing Motion

What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?

Which has zero acceleration?

A car accelerates from rest at 2 m/s2. What is its speed 3 s after the car starts moving?

It takes 6 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft?

Drop a rock from a 5-m height and it accelerates at 10 m/s2 and strikes the ground 1 s later. Drop the same rock from a height of 2.5 m and its acceleration of fall is

Whereas Aristotle relied on logic in explaining nature, Galileo relied on

Density is the ratio of

Distinguish between velocity and acceleration, and apply each to a ball tossed straight upward.

Compared with the mass of a certain object on Earth, the mass of the same object on the Moon is

An object travels 8 m in the 1st second of travel, 8 m again during the 2nd second of travel, and 8 m again during the 3rd second. Its acceleration is therefore

If a baseball being thrown goes from zero to 30 m/s in 0.1 s, what is its average acceleration?

An object is in free fall. At one instant, it travels at a speed of 50 m/s. Exactly 1 s later, its speed is about

A 1-kg mass at Earth's surface weighs about

While a car travels around a circular track at constant speed, its

If a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s2, then its speed reading would increase each second by

Starting from rest, the distance a freely falling object will fall in 0.5 s is about

One object has twice as much mass as another object, and also has twice as much

The scientist to first introduce the concept of inertia was

In which of the following locations would a chunk of gold weighing 1 N have the largest mass?

Which direction does a table push a book resting on it?

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