Physics' Concept - 2
Classical Mechanics
Level
2
A person throws a ball upwards. Eventually the ball reaches a certain highest point and falls back to the thrower. What was the state of motion of the ball at the highest point?
The gravitational force of earth and sun cancelled each other and hence , the ball was at rest.
Due to the blowing air , the ball was just hung up at that point.
The ball possesed uniform rotational motion.
The acceleration of the ball ended and for that instant of time , the ball was at rest.
It was still accelerating.
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Since the ball is continuously under the influence of gravitational pull of the earth , at every instant of its journey , the ball was continuously accelerating. At the highest point due to decelaration , the velocity of the ball became zero but it was "still accelerating" and thus , after sometime you will see that the velocity of the ball will eventually increases.