Physics - Collisions Review

Melvin has a mass of 66 kg and is running west at 12 m/s.

Maxine has a mass of 54 kg and is running east at 16 m/s.

What is Melvin's kinetic energy?

• 4752 J

• 6912 J

• 8911 J

• 9364 J

Tags

NGSS.HS-PS3-1

Melvin has a mass of 66 kg and is running west at 12 m/s.

Maxine has a mass of 54 kg and is running east at 16 m/s.

What is Maxine's kinetic energy?

• 4752 J

• 6912 J

• 8911 J

• 9364 J

Tags

NGSS.HS-PS3-2

Melvin has a mass of 66 kg and is running west at 12 m/s.

Maxine has a mass of 54 kg and is running east at 16 m/s.

What is their total kinetic energy?

• 6752 J

• 6902 J

• 11664 J

• 12960 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Melvin has a mass of 66 kg and is running west at 12 m/s.

Maxine has a mass of 54 kg and is running east at 16 m/s.

If they collide in a perfectly inelastic collision, which direction will they go?

• east

• west

• neither

Tags

NGSS.HS-PS2-2

Melvin has a mass of 66 kg and is running west at 12 m/s.

Maxine has a mass of 54 kg and is running east at 16 m/s.

After colliding in a perfectly inelastic collision, how much kinetic energy will they have?

• less than 11664 J

• 11664 J

• more than 11664 J

Tags

NGSS.HS-PS2-2

NGSS.HS-PS3-1

Momentum is conserved in what type of collisions?

• elastic only

• perfectly inelastic only

• elastic and inelastic

Tags

NGSS.HS-PS2-2

A 15 kg dog is running at a speed of 21 m/s. How much momentum does it have?

• 315 kg*m/s

• 40.5 kg*m/s

• 36 kg*m/s

• 360 kg*m/s

Tags

NGSS.HS-PS2-2

A 15 kg dog is running at a speed of 21 m/s. How much kinetic energy does she have?

• 3307.5 J

• 2420.9 J

• 441 J

• 1570.1 J

Tags

NGSS.HS-PS3-1

A 15 kg dog is running at a speed of 21 m/s when she jumps on a 3 kg stationary skateboard and begins riding it down the sidewalk.

What type of "collision" is this?

• inelastic

• elastic

Tags

NGSS.HS-PS2-2

A 15 kg dog is running at a speed of 21 m/s when she jumps on a 3 kg stationary skateboard and begins riding it down the sidewalk.

What is the velocity of the skateboard after the dog jumps on it?

• 17.5 m/s down the sidewalk

• 1.5 m/s down the sidewalk

• 21.5 m/s down the sidewalk

• 9.6 m/s down the sidewalk

Tags

NGSS.HS-PS2-2