a car of mass 1000kg moving with a speed of 30 m/s collides with the back of stationary lorry of mass 9000kg calculate the speed of vehicles immediately after the collision if they remain jammed together
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By using law of conservation of momentum
m₁u₁ = (m₁ + m₂)v
v = m₁u₁ / (m₁ + m₂)
= (1000 kg × 30 m/s) / (1000 kg + 9000 kg)
= 3 m/s
Speed of vehicles after collision is 3 m/s
m₁u₁ = (m₁ + m₂)v
v = m₁u₁ / (m₁ + m₂)
= (1000 kg × 30 m/s) / (1000 kg + 9000 kg)
= 3 m/s
Speed of vehicles after collision is 3 m/s
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