Momentum & Collisions Review

What is the unit for momentum?

• m/sec
• kg/sec
• kg/m
• kg m/sec

Tags

NGSS.HS-PS2-2

In a collision, the impulse is ______ the object's change in momentum

• Greater than

• Equal to

• less than

• always double

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

Tags

NGSS.HS-PS2-2

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and acceleration

• mass and veloctiy

• mass and energy

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.

Tags

NGSS.HS-PS2-2

A 2 kg cart has a momentum of 10 kg m/s. What is its velocity?

• 22 m/s
• .2 m/s
• 5.0 m/s
• 20 m/s

Tags

NGSS.HS-PS2-2

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

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

Tags

NGSS.HS-PS2-2

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

A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. If all the momentum is transferred, at what speed will the second boxcar move?

• 18.6 m/s

• 9.3 m/s

• 7.5 m/s

• 1.86 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2