Momentum and CollisionHardBloom L3

Question

A body of mass 4 kg is acted on by a force which varies as shown in the graph below. The momentum acquired is

Options

A.280 N–s

B.140 N–s

C.70 N–s

D.210 N–s

Solution

Sol. Momentum acquired = Area (∆↑)= 5 × 10 + $\frac{1}{2}$×4×10 = 50 + 20 =70 N-s

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