1) Marty (m = 8 kg) is sitting still in a small fishing boat (40 kg) when he decides to go for a swim. Marty
jumps off of the boat, which causes the boat to have a velocity of 1 m/s. What is the velocity of Marty's
jump?
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Ответ:
the velocity of the Marty's Jump is 5 m/s.
Explanation:
Given;
mass of Marty, m₁ = 8 kg
mass of the boat, m₂ = 40 kg
velocity of the boat, u₂ = 1 m/s
Let the velocity of the Marty's Jump = u₁
Apply the principle of conservation of momentum;
m₁u₁ = m₂u₂
u₁ = m₂u₂/m₁
u₁ = (40 x 1) / (8)
u₁ = 5 m/s.
Therefore, the velocity of the Marty's Jump is 5 m/s.
Ответ:
b
Explanation: