Question

A force of 12N acts on an

object of mass of 4kg in the state of rest for 3s.​ Calculate the kinetic energy acquired by the
object.

Answer 1

Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass. The kind of motion may be translation (or motion along a path from one place to another), rotation about an axis, vibration, or any combination of motions

ke =1/2 mv^2. or. k.e = (force)^2 ×(time)^2 /mass

in ur case

F=12 N

M=4kg

T=3 s

so

ke. = (12)^2 ×(3)^2/4

=324 j ans

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