Momentum Basics

Momentum can best be described as ___________ in motion.

• resistance

• force

• inertia

• velocity

Tags

NGSS.HS-PS2-2

In order to have momentum, you must have both _____________ and ________________.

• speed, velocity

• velocity, force

• acceleration, mass

• mass, velocity

Tags

NGSS.HS-PS2-2

Two objects have the same mass. Object A travels at double the speed as Object B. How do their momenta compare?

• Object A has double the momentum of Object B.

• Object A has half the momentum of Object B.

• Object A and Object B both have the same momentum.

• Object A and Object B both have no momentum.

Tags

NGSS.HS-PS2-2

What is the momentum of a 100 kg box that is sitting at rest on the floor.

• 0 N s

• 0 J

• 0 m/s

• 0 kg

A car that has a mass of 2000 kg travels at 20 m/s. What is its momentum?

• 100 N s

• 40,000 N s

• 0.01 N s

• 2, 038 N s

Tags

NGSS.HS-PS2-2

A traveler is hiking and carrying 80 N s of momentum. If she has a mass of 70 kg, what is her speed?

• 5600 m/s

• 0.88 m/s

• 1.14 m/s

• 10 m/s

Tags

NGSS.HS-PS2-2

What does it mean to say that momentum in a closed system is conserved?

• The total momentum before an event must be equal to the total momentum after an event.

• Momentum for an object can never change.

• Objects that move gain momentum.

• Objects at rest have no momentum.

Tags

NGSS.HS-PS2-2

The formula for momentum is

• p=mv²
• p=m²v
• p=mv
• m=pv

What is the net momentum of a 2 kg car traveling at  5 m/s to the right running into the back of a 20 kg train that is traveling at 10 m/s in the same direction?

• 190 kg*m/s
• 200 kg*m/s
• 210 kg*m/s
• 100 kg*m/s

What is the net momentum of a 40 kg zebra traveling at  4 m/s to the right running into the back of a 25 kg penguin that is traveling at 20 m/s in the opposite direction?

• - 660 kg*m/s
• -340 kg*m/s
• 3.13 kg*m/s
• 340 kg*m/s