Momentum

Multiple Choice

Which of the following factors can increase the momentum of a moving object?

• Increasing its mass

• Decreasing its speed

• Increasing its speed

• Both increasing its mass and speed

Multiple Choice

Why is it harder to stop a large truck than a small car when both are moving at the same speed?

• The truck has more speed

• The truck has more mass

• The car has less inertia

• The car is smaller

Math Response

1. What is the momentum of a 2000 kg truck traveling at 50 m/s?

Type answer here

Correct Answer: 100000

Deg^°

Rad

Math Response

A ball bounces at 8 m/s and has a momentum of 72 kg*m/s. What is the mass?

Type answer here

Correct Answer: 9

Deg^°

Rad

Multiple Select

What factors affect an object's momentum?

• mass

• acceleration

• gravity

• velocity

Multiple Choice

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

• car
• bike
• they are equal
• cannot determine using the info provided

Dropdown

Airbags and collapsible bumpers both ​

Select answer

the ​

Select answer

to ​

Select answer

the force in a collision.

Multiple Choice

If the velocity of an object is tripled, how does its momentum change assuming mass remains constant?

• It remains unchanged.

• It doubles.

• It triples.

• It is halved.

Multiple Choice

What happens to the force of impact if the change in momentum occurs over a short period of time?

• The force of impact is large

• The force of impact is small

• The force of impact does not change

• The force of impact becomes zero

Multiple Choice

If you had to choose between hitting a haystack or a concrete wall in a car, which would you choose to decrease the force of impact, and why?

• Haystack, because it increases the time of impact and reduces force.

• Concrete wall, because it is stronger.

• Haystack, because it decreases the time of impact.

• Concrete wall, because it increases the force of impact.

Multiple Choice

Using the model from our notes,

What does our model say will happen with more force AND less time?

• A change in Mass

• A change in Velocity

• A change in Newtons

Multiple Choice

Using the model from our notes,

If there's more time there's how much force?

• More Force

• Less Force

• Some Force

• Less Time

Multiple Choice

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.

• 1 N⋅s

• 6 N⋅s

• 33.3 N⋅s

Multiple Choice

A 5 N force is applied to a 3 kg ball to slow it down from 9 m/s to 3 m/s. What is the impulse on the ball?

• -2.5 N⋅s

• -10 N⋅s

• -18 N⋅s

• -45 N⋅s

Multiple Choice

What is the main condition required for momentum to be conserved during collisions?

• No external forces interfere

• Objects must be at rest

• Only one object is moving

• The collision must be elastic

Multiple Choice

Which object listed below has the greatest momentum?

• A 0.05 kg object rolling at 0.2 m/s.
• A 0.15 kg object rolling at 2 m/s.
• A 0.15 kg object rolling at 1 m/s
• A 0.4 kg object rolling at 2 m/s.

Multiple Choice

A simple way to define momentum is

• Mass in Motion
• The size of an object
• The velocity of an object
• A comparison between two objects

Multiple Choice

The Law of Conservation of Momentum states:

• The total momentum before a collision is equal to the total momentum after a collision.

• The total momentum before a collision is greater than the total momentum after a collision.

• The total momentum before a collision is less than the total momentum after a collision.

• The total momentum before a collision is not related to the total momentum after a collision.