Momentum and CollisionHard
Question
A ball of mas 1 kg strikes a heavy platform, elastically, moving upwards with a velocity of 5m/s. The speed of the ball just before the collision is 10m/s downwards. Then the impulse imparted by the platform on the ball is
Options
A.15 N-s
B.10 N-s
C.20 N-s
D.30 N-s
Solution
e = - 
⇒ 1 = - 
⇒ v1 = 20 m/s
∴ Impulse on ball = m
= 1 [20 - (10)] = 30 N-s
⇒ 1 = - ⇒ v1 = 20 m/s
∴ Impulse on ball = m
= 1 [20 - (10)] = 30 N-sCreate a free account to view solution
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