Why does light striking on center of corvature bounces back?
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Mass of the ball, m = 150 g = 0.15 kg
Initial speed of the ball, u = -12 m/s
Final speed of the bal after being hit, v = 20 m/s
Impulse = change in momentum = final momentum initial momentum
= Impulse = 0.15 × 20 0.15 × (-12) = 4.8 Ns
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