The correct answer is 1. at a point when the ball is still rising.
Kinetic energy is the energy of an object due to its motion. When the ball is still rising, its velocity is decreasing as it moves upward against the force of gravity. As a result, the kinetic energy of the ball is decreasing.
When the ball leaves the person's hand, it has initial kinetic energy given by its initial velocity.
At a point before the ball hits the ground, the ball is moving downward and its velocity is increasing due to acceleration from gravity. Therefore, the kinetic energy of the ball is increasing as it approaches the ground.
When the ball is at its highest point, its velocity is momentarily zero and therefore its kinetic energy is also momentarily zero. However, this is only a brief instant and not a sustained period of low kinetic energy.
A person throws a ball up into the air, and the ball falls back toward Earth. At which point would the kinetic energy be the lowest?
1. at a point when the ball is still rising
2. when the ball leaves the person's hand
3. at a point before the ball hits the ground
4. when the ball is at its highest point
1 answer
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