Momentum and Forces Quiz

What is the formula for momentum?

• Momentum = mass + velocity

• Momentum = mass / velocity

• Momentum = mass - velocity

• Momentum = mass * velocity

If a 2 kg particle is traveling at 5 m/s, what is its momentum?

• 10 kg m/s

• 5 kg m/s

• 15 kg m/s

• 20 kg m/s

How do you calculate the force required to change an object's momentum?

• Force = change in momentum - time

• Force = change in momentum / time

• Force = change in momentum * time

• Force = change in momentum + time

What is the change in momentum if an object's momentum changes from 10 kg m/s to 16 kg m/s?

• 4 kg m/s

• 6 kg m/s

• 8 kg m/s

• 10 kg m/s

Calculate the force required to accelerate a 600 gram ball from rest to 14 m/s in 0.1 seconds.

• 70 N

• 84 N

• 60 N

• 80 N

What is the initial velocity of an object that starts from rest?

• 10 m/s

• 5 m/s

• 0 m/s

• 15 m/s

Why is it important to spread the change in momentum over a longer period of time during a car crash?

• To increase the force experienced

• To increase the speed of the car

• To maintain the same force

• To decrease the force experienced

Which safety feature in cars helps to crumple on impact and increase the time for momentum change?

• Seat belts

• Airbags

• Helmets

• Crumple zones

What is one function of seat belts in a car?

• To increase the speed of the car

• To stop you from flying out of the car

• To make the car more comfortable

• To reduce fuel consumption

How do airbags help reduce injuries during a car crash?

• By reducing the car's weight

• By increasing the speed of the car

• By being compressible like a pillow

• By being hard and rigid