Typically the deformation impulse the restitution impulse a

Typically the deformation impulse ______ the restitution impulse.
a. is greater than
b. is less than
c. is a function of
d. comes after

A plastic impact means:
a. deformation impulse equals zero
b.restitution impulse equals 1
c.restitution impulse equals 0
d. deformation impulse equals 1

Solution

Ans- i) a) is greater than.

Explanation- It has been practically observed that deformation Impulse is generally greater than restitution impulse.It can be even equal to it but cannot be smaller. Also, it occurs before restitution impulse so option d is wrong.

ii) c) restitution impulse 0

Explanation- In a plastic impact, no energy is regained thus there is a loss of energy.So the coefficient of restitution becomes zero, which means restitution impulse becomes zero.