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23 Nov 2019
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?
Jean KeelingLv2
29 Jan 2019