Two carts are initially at rest. A coiled spring on one cart In released and the

Question

Two carts are initially at rest. A coiled spring on one cart In released and they push away from each other. The mass of cart 1 is 0.875 kg and the mass olf cart 2 is 1,25 kg. What is the ratio of the final speeds, v1/v2? What is the ratio KE1/KE2? The same two carts are now used in a perfectly inelastic collision experiment. cart 2 is initially at rest. Cart 1 has initial speed 0.320 m/s What is the final speed of the carts? What is the final speed of the carts? What percent of the initial kinetic energy is lost in the collision?

Explanation / Answer

a)

v1/v2 = m2/m1

= 1.25/0.875

= 1.43

b)

KE1/KE2 = 0.5*(m1/m2)*(v1/v2)^2

= 0.5*(0.875/1.25)*(1.43^2)

= 0.716

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