The graph could be representing a ball rebounding between two walls separated by 2 cm with a constant velocity in free space. After receiving the impulse ball changes its direction. Hence time between two impulses is 2 seconds.
velocity = \(\frac {displacement}{time}\) = \(\frac {2 \times 10^{-2}}{2}\)
= 0.01 m/s
Initial momentum,
mu = 0.04 × 10-2kgm/s
Final momentum,
mv = – 0.04 × 10-2kgm/s
∴ Change in momentum = 0.08 × 10-2kgm/s.
