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24 Jan 2018
A 2.3 kg cart is rolling across a frictionless, horizontal tracktowards a 1.5 kg cart that is initially at rest. The carts areloaded with strong magnets that cause them to attract to eachother. Thus, the speed of each cart increases. At a certain instantbefore contact the carts collide, the first cart's velocity is +4.5m/s and the second cart's is -1.9m/s.
a) What is the momentum of the system of the two carts at thisinstant?
b) What was the velocity of the first cart when the second cart wasstill at rest?
A 2.3 kg cart is rolling across a frictionless, horizontal tracktowards a 1.5 kg cart that is initially at rest. The carts areloaded with strong magnets that cause them to attract to eachother. Thus, the speed of each cart increases. At a certain instantbefore contact the carts collide, the first cart's velocity is +4.5m/s and the second cart's is -1.9m/s.
a) What is the momentum of the system of the two carts at thisinstant?
b) What was the velocity of the first cart when the second cart wasstill at rest?
2 Jun 2021
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