Collisions where objects BOUNCE apart.

• inelastic collisions

• elastic collisions

• explosions

• none of these

Tags

NGSS.HS-PS2-2

Collision where objects collide, and stick together.

• inelastic collision

• explosion

• elastic collision

• none of these

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Which TWO variables determine the MOMENTUM for an object?

• time

• density

• velocity

• mass

Tags

NGSS.HS-PS2-2

 

If the cars collide INELASTICALLY, how would they move afterward (if at all)?

• They would BOUNCE OFF and move LEFT

• They would STICK TOGETHER and move LEFT

• They would BOUNCE OFF and move RIGHT

• They would STICK TOGETHER and move RIGHT

Tags

NGSS.HS-PS2-2

The purpose of crumble zones on a car is to

• decrease time of impact.
• increase force of impact.
• increase the time of impact.
• decrease the impulse during impact.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

When the speed of an object is doubled, its momentum

• remains unchanged in accord with the conservation of momentum.
• doubles
• quadruples
• decreases

Tags

NGSS.HS-PS2-2

The purpose of air bags on a car is to

• decrease time of impact.
• increase force of impact.
• increase the time of impact.
• decrease the impulse during impact.

Tags

NGSS.HS-PS2-3

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.

• 1 N⋅s

• 6 N⋅s

• 33.3 N⋅s

The SI unit for momentum is:

• N^.kg

• N^.m/s

• m/s^.N

• kg^.m/s

Tags

NGSS.HS-PS2-2

The units for Impulse are

• N/s
• N-s
• N
• m/s