Question

Think about a girl on a swing. When is the kinetic energy of the girl zero?

Answer 1

Kinetic energy is energy of motion. Pick choice-A, at the top of the swing,  where she stops moving & then goes the other way.

Answer 2

Answer:

The K.E is zero when she stops moving at the top of the swing

Explanation:

Kinetic energy is the energy produced by the motion of the object and when the object is not moving so we consider the kinetic energy as zero. When the girl swings and the swing reaches its top point, it stops for a moment and then comes back so the point where the swing stops moving the kinetic energy is zero.