Question

A ball is thrown straight up in the air. When will its kinetic energy be the least before it is caught? A. at the start of its flight. . B. halfway to the top of its flight. . C. at the end of its flight. . D. at the top of its flight

Answer 1

Your answer is

D.) At The Top Of Its Flight

because once something gets to the top, or let's say the peak of its journey, it has gathered the most energy

Hope this Helps! :)

Answer 2

The correct answer to the question is D). At the top of its flight.

EXPLANATION:

When a  ball is thrown into air, the only force except air resistance that affects the motion of the ball is the force of gravity which pulls the body in vertically  downward direction.

When the ball was thrown, it has kinetic energy only. As the ball went up, its kinetic energy is converted into potential energy.

Due to the gravity,the velocity of the ball is decreasing each time. At a certain time, the ball will reach at its maximum height where its velocity will be completely zero. At that time whole of its kinetic energy must have converted into potential energy due to the law of conservation of energy.

Hence, the kinetic energy is least at the top of its flight.