Quiz about Forces & Motion

Question 1

What is a force?

Accepted Answer

a push or a pull

Answer

something Darth Vadar has

Answer

something you can see

Question 2

Force is measured in...

Accepted Answer

Newtons

Answer

cm

Answer

m/s2

Answer

grams

Question 3

To calculate forces that are in the same direction you...

Accepted Answer

add them

Answer

subtract them

Answer

multiply them

Answer

divide them

Question 4

To calculate forces that are in opposite directions you...

Accepted Answer

subtract them

Answer

add them

Answer

multiply them

Answer

divide them

Question 5

The unbalanced force that opposes motion is known as...

Accepted Answer

friction

Answer

force

Answer

push or pull

Answer

the tires on a car

Question 6

Forces that are considered to be in motion are called...

Accepted Answer

unbalanced forces

Answer

friction

Answer

balanced forces

Question 7

If two cars move toward each other at the same speed which car will have more force?

Accepted Answer

A larger car because of its mass

Answer

A smaller car because of its mass

Answer

A larger car because of its speed

Answer

A smaller car because of its speed

Question 8

Inertia is...

Accepted Answer

an object's tendency to resist change in motion

Answer

an object's ability to change direction

Answer

an object's ability to move

Answer

forces depend on the mass and weight of the object

Question 9

Which is an example of an unbalanced force?

Accepted Answer

a girl shooting a basketball

Answer

a puppy sleeping on the couch

Answer

a poster hanging on the wall

Answer

a jar sitting on a shelf

Question 10

When would the forces acting on the wooden box be balanced?

Accepted Answer

when it is pushed from both sides using the same force

Answer

when it is pushed from one side with one hand

Answer

when it is pushed from the same side with two hands

Answer

when it is pushed from both sides using different forces

Question 11

What happens when the same amount of force is applied to both sides of the box?

Accepted Answer

the forces are balanced and will remain at rest

Answer

the forces are unbalanced and will move to the left

Answer

the forces are balanced and will move to the right

Answer

the forces are unbalanced and will remain at rest

Question 12

I decided to kick soccer balls of different weights with different forces. Using the data in the table, which ball would travel the farthest?

Accepted Answer

ball 1

Answer

ball 2

Answer

ball 3

Answer

ball 4

Question 13

When forces on an object are balanced, what is the net force?

Accepted Answer

Zero

Answer

Five

Answer

Ten

Answer

Six

Question 14

Total distance divided by total time is...

Accepted Answer

average speed

Answer

constant speed

Answer

instantaneous speed

Answer

acceleration

Question 15

What is the net force?

Accepted Answer

400 N Down

Answer

400 N Up

Answer

- 400 N Down

Answer

800 N Down

Question 16

What is the net force?

Accepted Answer

0 N

Answer

10 N

Answer

25 N

Answer

1 N

Question 17

What is the net force?

Accepted Answer

40 N right

Answer

40 N left

Answer

0 N Balalnced

Answer

400 N right

Question 18

What does the solid horizontal slope in this graph represent?

Accepted Answer

Not moving

Answer

Constant speed

Answer

Acceleration

Question 19

What is happening at E?

Accepted Answer

Steady speed; returning to start position

Answer

Stationary

Answer

Accelerating

Answer

Fast steady speed; moving away from the starting position

Question 20

What is happening at D?

Accepted Answer

Fast steady speed; moving away from the starting position

Answer

Stationary

Answer

Accelerating

Answer

Slower steady speed; moving away from the starting position

Question 21

What is happening at C?

Accepted Answer

Accelerating

Answer

Stationary

Answer

Fast steady speed; moving away from the starting position

Answer

Slower steady speed; moving away from the starting position

Question 22

An object is in motion if it changes position relative to a _____.

Accepted Answer

reference point

Answer

net force

Answer

relative point

Question 23

The force of attraction between two objects; increases as the mass of the objects increase; decreases as the distance between the objects increases ...

Accepted Answer

gravity

Answer

friction

Answer

balanced forces

Answer

unbalanced forces

Question 24

The term for when an object speeds up, slows down, or changes direction.

Accepted Answer

Acceleration

Answer

Speed

Answer

Velocity

Answer

Newtons

Question 25

A Cheetah runs 140 meters in 5 seconds. What is its average speed?

Accepted Answer

28 m/s

Answer

700 m/s

Answer

.036 m/s

Answer

60 mph

Question 26

How are speed and velocity different?

Accepted Answer

Velocity includes direction

Answer

Speed includes direction

Answer

Speed indicates momentum

Answer

Velocity includes Momentum

Question 27

Acceleration is ____ when an object is speeding up.

Accepted Answer

positive

Answer

balanced

Answer

negative

Answer

unbalanced

Question 28

Which of the following are examples of increasing friction intentionally? (check all that apply)

Accepted Answer

adding sand to an icy road

Accepted Answer

wearing cleats for playing soccer

Answer

adding oil to an engine

Answer

oiling a squeaky door hinge

Question 29

Which object has less inertia than a tennis ball?

Accepted Answer

ping pong ball

Answer

bowling ball

Answer

basketball

Answer

soccer ball

Question 30

T/F If there is no air resistance, you can drop a feather and a hammer from the same height and they will hit the ground at the same time.

Accepted Answer

True

Answer

False

Question 31

The steeper the slope on a distance-time graph, the greater the ____.

Accepted Answer

speed

Answer

acceleration

Answer

distance

Answer

momentum

Question 32

Which of the following are examples of decreasing friction intentionally? (check all that apply)

Accepted Answer

oiling a squeaky door hinge

Accepted Answer

adding oil to an engine

Answer

adding sand to an icy road

Answer

wearing cleats for playing soccer

Question 33

The force you have to overcome to start an object moving is ____.

Accepted Answer

static friction

Answer

sliding friction

Answer

rolling friction

Answer

fluid friction

Question 34

Match the graph with the story.

Accepted Answer

Tom ran from home to the bus stop and waited. He realized that he missed the bus so he walked home.

Answer

Tom walked slowly up the steep hill and rested once he reached the top. Then he walked quickly down the other side of the hill.

Answer

After the party, Tom walked slowly back home.

Question 35

The skydiver's descent is slowed down because of ____.

Accepted Answer

air resistance

Answer

gravity

Answer

mass

Answer

acceleration

Question 36

Why is it easier to move heavy objects on a cart rather than just sliding them?

Accepted Answer

rolling friction is easier to overcome than sliding friction

Answer

sliding friction is easier to overcome than rolling friction

Answer

static friction is easier to overcome than fluid friction

Answer

sliding friction is easier to overcome than static friction

Question 37

What must happen in order for the plane to fly? (check all that apply)

Accepted Answer

thrust must be greater than drag

Accepted Answer

lift must be greater than weight

Answer

drag must be greater than thrust

Answer

weight must be greater than lift

Question 38

What is the combination of all forces acting on an object?

Accepted Answer

net force

Answer

balanced forces

Answer

unbalanced forces

Answer

gravity

Question 39

Match the graph with the story.

Accepted Answer

After the party, Tom walked slowly back home.

Answer

Tom walked slowly up the steep hill and rested once he reached the top. Then he walked quickly down the other side of the hill.

Answer

Tom ran from home to the bus stop and waited. He realized that he missed the bus so he walked home.

Question 40

Which arrow represents the frictional force?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 41

Which object has a greater effect on Earth's tides and why? (check all that apply)

Accepted Answer

the Moon

Accepted Answer

because it's closer

Answer

the Sun

Answer

because it has the most mass

Question 42

Which law states that the acceleration of an object depends on the force exerted on it and its mass?

Accepted Answer

Newton's 2nd Law

Answer

Newton's 1st Law

Answer

Newton's 3rd Law

Question 43

Which law states that for every action there is an equal and opposite reaction?

Accepted Answer

Newton's 3rd Law

Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Question 44

Which law states that an object at rest stays at rest and an object in motion stays in motion unless an unbalanced force acts on it?

Accepted Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Answer

Newton's 3rd Law

Question 45

Mary is riding in a car when the driver suddenly slams on the brakes. Mary is jerked forward out of her seat. This is an example of which law of motion?

Accepted Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Answer

Newton's 3rd Law

Question 46

A jellyfish swims through the water by pulling in water and then pushing the water back out in the opposite direction. This is an example of which law of motion?

Accepted Answer

Newton's 3rd Law

Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Question 47

Which law is this picture an example of?

Accepted Answer

Newton's 2nd Law

Answer

Newton's 1st Law

Answer

Newton's 3rd Law

Question 48

Which law is this picture an example of?

Accepted Answer

Newton's 3rd Law

Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Question 49

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

Accepted Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Answer

Newton's 3rd Law

Question 50

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.

Accepted Answer

Newton's 2nd Law

Answer

Newton's 1st Law

Answer

Newton's 3rd Law

Question 51

Explain what is happening in terms of Newton's 3rd Law.

Accepted Answer

Ron Swanson pushes the paddle backwards in the water and the canoe is propelled forward.

Answer

Ron Swanson is in motion and will remain in motion until an unbalanced force is applied to the canoe.

Answer

Ron Swanson applies a force to the canoe paddle and the canoe accelerates in the direction of the force.

Question 52

Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly.

Accepted Answer

Newton's 2nd Law

Answer

Newton's 1st Law

Answer

Newton's 3rd Law

Answer

None of them

Question 53

A rocket is sent into space. When the power dies out, the rocket will just keep floating and moving in space forever (unless an unbalanced force, such as a meteor, runs into it).

Accepted Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Answer

Newton's 3rd Law

Question 54

Which law is best represented by this picture?

Accepted Answer

Newton's 2nd Law

Answer

Newton's 1st Law

Answer

Newton's 3rd Law

Question 55

Explain what is happening in terms of Newton's 1st Law.

Accepted Answer

The football is at rest and will remain at rest until the player applies a force to the ball.

Answer

The football will accelerate in the direction that the force is applied.

Answer

The football player pushes on the ball and the ball pushes back onto the player.

Question 56

Newton's 2nd Law says the acceleration of an object depends on its _______ and ______. (Choose two answers)

Accepted Answer

force or applied force

Accepted Answer

mass

Answer

weight

Answer

gravity

Question 57

What is the reaction force?

Accepted Answer

The floor pushes up on the feet.

Answer

The feet push down on the floor.

Answer

The feet are in motion and will stay in motion.

Answer

The feet are at rest and will stay at rest.

Question 58

What is the reaction force?

Accepted Answer

Ball pushes back on bat

Answer

Bat hits ball

Answer

Ball is propelled forward

Answer

Ball tears apart

Question 59

Explain what is happening in terms of Newton's 2nd Law.

Accepted Answer

The soccer player applies a force to the ball and it accelerates in the direction of the goal.

Answer

The soccer player applies an unbalanced force to the ball and the ball continues to move until the net applies an opposing force to it.

Answer

The soccer player applies a force to the ball and the ball applies a force to his foot and he feels this as pressure.

Question 60

Which Law does this best represent?

Accepted Answer

Newton's 3rd Law

Answer

Newton's 1st Law

Answer

Newton's 2nd Law

Forces & Motion

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