First slide

Second law

Question

The figure shows the position-time (x-t) graph of one-dimensional motion of a body of mass 0.4 kg. The magnitude of each impulse is

Easy

A

0.4 N-s
B

0.8 N-s
C

1.6 N-s
D

0.2 N-s

Solution

$ΔP = 2 mu \Rightarrow 2 \times 0 .4 \times \frac{2}{2} = 0 .8 NS = 2 m \frac{x}{t}$

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