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Force and Laws of Motion
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02/11/2021 4:38 pm
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A heavy car A of mass 2000 kg travelling at 10 m/s has a head-on collision with a sports car B of mass 500 kg. If both cars stop dead on colliding, what was the velocity of car B?
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02/11/2021 4:40 pm
Mass of car A, m1 = 2000 kg
Speed of car A, v1 = 10 m/s
Mass of car B, m2 = 500 kg
Speed of car B, v2
Acc. to law of conservation of momentum
m1v1 = m2v2
2000 x 10 = 500 x v2
v2 = \(\frac{2000 \times 10}{500}\) = 40 m/s
This post was modified 3 years ago by Mayank1444