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A 0 . 1 0 0 kg toy car is propelled by a compressed spring that starts it moving. The car follows the curved path.

A 0.100 kg toy car is propelled by a compressed spring that starts it moving. The car follows the curved path. If the spring constant of the launcher was 125 N/m, and the spring was compressed 5 cm for the launch.
a.How fast (in m/s) is the car going when leaves the launcher.
b.How fast is the car going if travels up a hill to a height of 0.120 m?
c. The car then goes into a valley that carries it below the launcher. At the bottom it is going 3.00 m/s. How far below the launcher is the bottom of the valley. Report your answer as a positive number in meters.

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