Question

20 joules of work is done in accelerating a 4kg mass from rest across a horizontal frictionless surface. The kinetic energy gained by the mass is

Answer 1

Answer:

the kinetic energy gained by the mass is 20J

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Explanation:

by work energy theorem

work done = change in kinetic energy

20J=change in kinetic energy

so, the kinetic energy gained by the mass is 20J