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Jocko the clown, whose mass is 60-Kg, stands on a skateboard. A 20-Kg ball is thrown at Jocko at 3m/s, and when he catches the ball, he and
Question
Jocko the clown, whose mass is 60-Kg, stands on a skateboard. A 20-Kg ball is thrown at Jocko at 3m/s, and when he catches the ball, he and the ball move on the skateboard. How fast do Jocko and the ball move after he catches the ball?
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Physics
3 years
2021-08-06T19:07:58+00:00
2021-08-06T19:07:58+00:00 1 Answers
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Answer:
The speed of the Jocko and the ball move after he catches the ball is 0.75 m/s.
Explanation:
Given that,
Mass if Jocko, m = 60 kg
Mass of the ball, m’ = 20 kg
Speed of the ball, v = 3 m/s
Let V is the speed of Jocko and the ball move after he catches the ball. The momentum of the system remains conserved. Using the conservation of momentum as :
So, the speed of the Jocko and the ball move after he catches the ball is 0.75 m/s.