On a frictionless air track, a 0.140 kg glider moving at 1.35 m/s to the right c

Question

On a frictionless air track, a 0.140 kg glider moving at 1.35 m/s to the right collides with and sticks to a stationary 0.245 kg glider.

Part A:What is the net momentum of this two-glider system before the collision?
p=_______kg*m/s

Part B:What must be the net momentum of this system after the collision?
p=_______kg*m/s

Part C:Why?
Essay answers are limited to about 500 words (3800 characters maximum, including spaces).

Part D:Use your answers in Parts A and B to find the speed of the gliders after the collision.
v=_______m/s

Part E:Is kinetic energy conserved during the collision?
a.yes
b.no

Please Show Work because my test will have a question just like this!!!

Explanation / Answer

A) P=mv=.189 B) Remains same as momentum never changes until a force is applied P=.189 C)according to momentum of conservation , momentum does not change because there is no external force present So, it remains conserved D) v=.189/(m1+m2) 0.49m/s E)No, because its a inelastic collision an in an elastic collision , Kinetic energy does not remains conserved

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