Momentum and Collisions Review

What is the unit for momentum?

• m/s

• m/s²

• N

• kg•m/s

Tags

NGSS.HS-PS2-2

An egg landing on a soft surface will remain intact. The surface increases the _____ and decreases the _____ during the impact

• impulse, time

• impulse, force

• force, time

• time, force

According to Newton's 3rd Law: If an egg falls and hits the ground with 50N of force, The Ground it lands on:

• Also experiences 50N of Force

• Takes away the Egg's force

• Slows down the time of collision

Tags

NGSS.MS-PS2-1

Which variable best matches why a seatbelt keeps people safer?

• It reduces the momentum you fly forward at

• The reduces your mass my holding you still

• It changes the time of your collision to absorb the force

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The relationship between MASS and MOMENTUM is a...

• Direct Relationship

• Inverse Relationship

Answer explanation

Higher mass = Higher momentum, harder to come to a stop

Tags

NGSS.HS-PS2-2

A bat hits a baseball in the ideal physics world. The total momentum _____ after the collision.

• increased

• decreases

• remains constant

• stays at zero

Tags

NGSS.MS-PS2-1

Which object listed below has the greatest momentum?

• 0.05 kg object rolling at 0.2 m/s.

• 0.15 kg object rolling at 2 m/s.

• 0.15 kg object rolling at 1 m/s

• 0.4 kg object rolling at 2 m/s.

Tags

NGSS.MS-PS3-1

A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision.  What is the velocity of the second ball after the collision? 

• 5 m/s

• 2.5 m/s

• 10 m/s

• 7.5 m/s

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?

• 14.4 kg

• 1400 kg

• 144 kg

• 360 kg

Tags

NGSS.MS-PS2-2

While playing pool, Emma notices that the pool balls bounce apart. What type of collision is this?

• Elastic

• Inelastic

• Explosive

• Force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS2-2