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Adrum of mass ‘m’ kg was rolled down a ramp. At the bottom of the ramp its kinetic energy was 10 kJ and velocity was 20 m/s. With what velocity (in m/
Question

Adrum of mass ‘m’ kg was rolled down a ramp. At the bottom of the ramp its kinetic energy was 10 kJ and velocity was 20 m/s. With what velocity (in m/s) was it
pushed down the ramp if its initial kinetic energy was 625 J?

A.

5m/s

B.

7.5 m/s

C.

10 m/s

D.

2.5 m/s

Correct option is A



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