F `rarr` t graph for a body is shown in figure. The change in value of momentum of the body in the interval 0.02 s to 0.06 s is ..

Options

A. 1.2 kg `ms^(-1)`
B. 0.3 kg `ms^(-1)`
C. 0.8 kg `ms^(-1)`
D. 0.4 kg `ms^(-1)`

Answer

C

Explanation

Change in value of momentum `Delta p = F Delta t`
f= 20 N and `Delta t = 0.06 -0.02 =0.04 s`
`:. , Delta p = 20 xx 0.04 = 0 .8 kg ms^(-1)`