Momentum Test

A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. 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-PS2-2

Momentum is a ____________________ quantity

• science
• scalar
• vector
• energy

Tags

NGSS.HS-PS2-2

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 speed
• mass and veloctiy
• mass and energy

Tags

CCSS.7.RP.A.3

A 0.05 kg lump of clay moving horizontally at 12 m/s strikes and sticks to a stationary 0.10 kg cart that can move on a frictionless air track. Determine the speed of the cart and clay after the collision.

• 2 m/s

• 4 m/s

• 6 m/s

• 8 m/s

• 12 m/s

Tags

NGSS.HS-PS2-2

A 10 kg rock at rest is broken into two pieces after an explosion. If a 4.0 kg part moves to the right at 21 m/s, find the velocity of the second piece.

• 1) M1V1 + M2V2 = M1V1F + M2V2F

• 2) 4 (0) + 6 (0) = 4 (21) + 6 (Vf)

• 3) 0= 84 + 6Vf

• 4) -84= 6Vf

• 5) Vf= -14 m/s

Tags

NGSS.HS-PS2-2

Two ice skaters meet in the center of the rink and come to rest. They now push off against one another. One skater with the mass of 54 kg, acquires a speed of 0.95 m/s. What is the speed of the other skater, whose mass is 61 kg?

• 0.47 m/s

• 0.48 m/s

• 0.84 m/s

• 0.88 m/s

Tags

NGSS.HS-PS2-2

Bean bag rounds used by police are nonlethal projectiles fired from shotguns. If a 40.0-g round strikes at 70.0 m/s and delivers all its momentum over a time of 0.15 s, what is the average force of impact?

• 18.7 x 10³ kg*m/s

• 18.7 kg*m/s

• 18.7 kg*m/s²

• 18.7 x 10³ kg*m/s²

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-1

A 3.00 kg object is moving toward the right at 6.00 m/s. A 5.00 kg object moves to the left at 4.00 m/s. After the two objects collide the 3.00 kg object moves toward the left at 2.00 m/s. What is the final velocity of the 5.00 kg object?

• -0.8 m/s

• 2 m/s

• 0.8 m/s

• -2 m/s

Tags

NGSS.HS-PS2-2

A large fish has a mass of 25.0 kg and swims at 1.00 m/s toward and then swallows a smaller fish that is not moving. If the mass of the smaller fish is 1 kg, what is the speed of the larger fish immediately after it finishes lunch.

• 1.00 m/s

• 0.96 m/s

• 1.04 m/s

• 26 kg*m/s

Tags

NGSS.HS-PS2-2