Work Energy And Power Question 283

Question: A ball of mass m hits the floor making an angle 9 as shown in the figure. Ife is the coefficient of restitution, then which relation is true, for the velocity component before and after collision?

Options:

A) V1sinθ=Vsinθ

B) V1sinθ=sinθ

C) V1cosθ=Vcosθ

D) V1cosθ=Vcosθ

Show Answer

Answer:

Correct Answer: A

Solution:

[a] As the floor exerts a force on the ball along the normal, & no force parallel to the surface, therefore the velocity component along the parallel to the floor remains constant.

HenceVsinθ=V1sinθ1.



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