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A ball of mass m moving with velocity v0...

A ball of mass m moving with velocity `v_0` collides a wall as shown in figure. After impact it rebounds with a velocity `3/4v_0`. The impulse acting on ball during impact is

A

(a) `-m/2v_0hatj`

B

(b) `-3/4mv_0hati`

C

(c) `(-5)/(4)mv_0hati`

D

(d) None of the above

Text Solution

Verified by Experts

The correct Answer is:
C
`Impu lse=Deltap=m(v_f-v_i)`
`=m[(-3/4v_0cos50^@hati+3/4v_0sin53^@hatj)-(v_0cos37^@hati+v_0sin37^@hatj)]`
`=-5/4mv_0hati`
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DC PANDEY ENGLISH-CENTRE OF MASS, LINEAR MOMENTUM AND COLLISION-Level 1 Objective
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