physics
posted by paulie .
A green 4 kg toy car with a speed of 5 m/s collides headon with a stationary yellow 1kg car. After the collision, the cars are locked together with a speed of 4 m/s. How much kinetic energy is lost in the collision?
a. what is the kinetic energy of the green 4kg toy care BEFORE the collision?
b. What is the kinetic energy of the yellow 1kg toy care BEFORE the collision.
c. What is the kinetic energy of the two cars after the collision?
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