A nearly frictional track was used to show collisions. Which of the following co

Question

A nearly frictional track was used to show collisions. Which of the following collisions is possible?

a.When two inelastic gliders of equal mass collide they bounced off each other with the same initial speed.

b. When two equal mass inelastic gliders collide they move off together in the direction the larger glider was heading at a faster speed.    

c. When two inelastic gliders of unequal masses collide they stick together and stop moving.

d. When two elastic gliders of different masses collide they bounced off each other transferring their momentum to the other glider and the lighter glider moves off with a greater speed.

e. When two elastic gliders of unequal masses collide they move off together in the direction of the larger mass glider at a slower speed.

Explanation / Answer

only one situation is possible:

b) When two equal mass inelastic gliders collide they move off together in the direction the larger glider was heading at a faster speed.

with inelastic collision only momentum is conserved and KE is not conserved. with pure inelastic collision the bodies stick toghether after collision and the momnetum of the final object is the algebriac sum of the momentums before collision and hence the body will move in the direction of the fater body

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