Spasticeesha throws a ball into the air. After the ball leaves her hand it accelerates in the upward direction until it reaches
its maximum height, then accelerates in the downward direction as it falls back down. (A) This may happen in a few cases, but it is very rare.
(B) True
(C) This may happen in many cases, but not in every case.
(D) None of these
(E) False
When a body is thrown in upward direction , it accelerated in downward direction and not in upward direction . It is so because , force of gravitation acts in downward direction.
Even if some invisible force pulls it in upward direction , it may have an acceleration in upward direction . In case it accelerates in upward direction, it will never stop so its maximum height will lie at infinity. In this way, the statement appears to be false.
if the v-t graph is parallel to the time axis its mean body has covered no path in other words the body is at rest so the velocity of the body should be zero