Elastic and Inelastic Collisions

A moving object's __________ is its mass times its velocity. It is in the direction of motion.

• momentum

• impulse

• inelastic collision

• elastic collision

Tags

NGSS.HS-PS2-2

__________ is defined as a force multiplied by the time during which that force acts. This is also known as the change in momentum.

• momentum

• impulse

• inelastic collision

• elastic collision

Tags

NGSS.HS-PS2-2

Momentum is conserved __________ collisions.

• only in elastic

• only in inelastic

• in all

• never during

Tags

NGSS.HS-PS2-2

Kinetic energy is conserved __________ collisions.

• only in elastic

• only in inelastic

• in all

• never during

True/False: The impulse-momentum theorem is only valid when objects collide.

• True

• False

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

The only time when momentum of a system is NOT conserved is when a force is exerted by an object that's __________ ,

• not in the system

• in the system

• moving

• not moving

Tags

NGSS.HS-PS2-2

The standard units for momentum are...

• Newton-seconds, Ns.

• Newtons per second, N/s

• Newton meters, Nm

• Newtons per meter, N/m

Tags

NGSS.HS-PS2-2

The direction of an object's momentum is always __________ its direction of motion

• the same as

• the opposite of

• parallel to

• perpendicular to

Tags

NGSS.HS-PS2-2

True/False: Impulse and momentum have different units.

• True

• False

Tags

NGSS.HS-PS2-2

For an elastic collision of two masses, M1 and M2, with two velocities, V1 and V2, after the collision, their total momentum will be equal to:

• M1V1+M2V2=M1V1'+M2V2'

• M1V1+M2V2=M1V1+M2V2

• M1V1+M2V2=(M1+M2)V3

• M1V1+M2V2=(M1+M2)(V1+V2)

Tags

NGSS.HS-PS2-2