Review for Forces/Newton's Laws Test

Question 1

Which way is the object moving?

Accepted Answer

Constant speed to the right.

Question 2

Why is it helpful to draw free-body diagrams?

Accepted Answer

To represent all forces acting on an object.

Question 3

The ___ law of motion describes the force needed to change the motion of an object.

Accepted Answer

2nd

Question 4

What is incorrect about the following free-body diagram?

Accepted Answer

Friction should be in the opposite direction of motion.

Question 5

The ___ law of motion tells what happens when one object exerts force on a second object.

Accepted Answer

3rd

Question 6

In which direction is the force of friction acting on this object?

Accepted Answer

To the left.

Question 7

Which way is the car moving?

Accepted Answer

To the left.

Question 8

The abbreviation to measure acceleration is

Accepted Answer

m/s2, meters per second squared

Question 9

Newton's 2nd law can be written as:

Accepted Answer

f = ma

Question 10

Which two free-body diagrams are accelerating?

Accepted Answer

b & d

Question 11

If no force acts on a nonmoving object, it will remain __________.

Accepted Answer

at rest

Question 12

In which of the free-body diagrams is the object not sitting on a stable surface?

Accepted Answer

D

Question 13

This free body diagram represents an object that is...

Accepted Answer

Not accelerating

Question 14

When you stick your hand out the window of a moving car, you are feeling ______________

Accepted Answer

air resistance

Question 15

In which of the free-body diagrams is there an applied force?

Accepted Answer

A

Question 16

What force keeps the water bottle in place after the piece of paper is quickly removed?

Accepted Answer

inertia

Question 17

As you glide across a frozen pond, what is there less of acting on your skates?

Accepted Answer

friction

Question 18

Which force is the biggest?

Accepted Answer

applied force

Question 19

What unit is used to measure force?

Accepted Answer

N

Question 20

A push or a pull is called a ________

Accepted Answer

force

Question 21

Which free-body diagram most likely represents a book sitting on a table top?

Accepted Answer

C

Question 22

What is a force that opposes motion? HINT: It occurs when things slide or roll over each other.

Accepted Answer

friction

Question 23

In which direction does the applied force act for a chair pushed rightward?

Accepted Answer

C

Question 24

In which direction does the force of gravity act?

Accepted Answer

E

Question 25

The unit kg is the abbreviation for

Accepted Answer

kilograms

Question 26

When you exert a force on an object, it exerts ______ force back on you.

Accepted Answer

the same

Question 27

The abbreviation to measure mass is

Accepted Answer

kilograms

Question 28

The abbreviation to measure force is

Accepted Answer

Newtons

Question 29

If the action is the baseball pushing the glove to the left, what is the reaction?

Accepted Answer

the glove pushing the baseball to the right

Question 30

Which FBD includes an applied force?

Accepted Answer

B & C

Question 31

An object at REST will remain at rest unless a force acts on it.

Accepted Answer

True

Question 32

The __ law of motion states that if no force acts on an object at rest, it will remain at rest.

Accepted Answer

1st

Question 33

How many forces are acting on this object?

Accepted Answer

4

Question 34

What is the tendency of an object to resist changes in its motion?

Accepted Answer

inertia

Question 35

When there is friction between two objects, the friction produces ____________.

Accepted Answer

heat

Question 36

What does F_norm stand for?

Accepted Answer

Normal force

Question 37

The unit m/s2 is an abbreviation for

Accepted Answer

meters/second2

Question 38

Who is the scientist who proposed the 3 laws of motion?

Accepted Answer

Newton

Question 39

In situation B, which force most likely represents a friction force?

Accepted Answer

15 N, left

Question 40

What is a push or a pull called?

Accepted Answer

force

Review for Forces/Newton's Laws Test

Questions 40

Review for Forces/Newton's Laws Test

Questions 40