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In the work and energy lab, a cart was pulled up a ramp and the force and distance were measured.
a. If the force is 4.5 Newtons and the cart travels 1.00 meters, how much work is done by your arm on the cart?
b. If the work done by your arm to the cart is 5.00 Joules, how much potential energy does the cart now have?
How much kinetic energy does the cart have when it is allowed to roll back down the ramp just before it hits the stop at the end of the track if the work done is 5.00 Joules? The mass of cart is 0.250 kilograms.
Sagot :
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