Q.

A force of 5 N acts on a body for 2 milliseconds. Calculate the impulse. If the mass of the body is 5 g, calculate the change of velocity.

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a

2 m/s

b

4 m/s

c

6 m/s

d

10 m/s

answer is A.

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Detailed Solution

Impulse = Ft             =5×2×10−3=10−2N  Ft=m(V−u)10−2=5×10−3(V−u)V−u=2ms−1
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