In the figure given, the position-time graph of a particle of mass 0.1 kg is shown. The impulse at t=2 sec is
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Options

A. `0.2 kg ms^(-1)`
B. `-0.2 kg m s^(-1)`
C. `0.1 kg m s^(-1)`
D. `-0.4 kg m s^(-1)`

Answer

B

Explanation

Impulse `=` change in momentum `= 0.1 xx 2 = 0.2 kg ms^(1)`