a small rock, with an initial speed equal to zero and a mass equal to 0.345 kg,

Question

a small rock, with an initial speed equal to zero and a mass equal to 0.345 kg, acquires a final speed of 14.2 m/s after accelerating horizontally under the influence of a net force. determine the work done by this net force on the small rock. a small rock, with an initial speed equal to zero and a mass equal to 0.345 kg, acquires a final speed of 14.2 m/s after accelerating horizontally under the influence of a net force. determine the work done by this net force on the small rock. a small rock, with an initial speed equal to zero and a mass equal to 0.345 kg, acquires a final speed of 14.2 m/s after accelerating horizontally under the influence of a net force. determine the work done by this net force on the small rock.

Explanation / Answer

By work energy theorem

Work done = change in kinetic energy

= 0.5 mv^2 = 0.5*0.345*(14.2)^2

= 34.7829J

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