## A problem from Projectile motion

If maximum height attained by a body projected vertically upward is equal to two times magnitude of acceleration , then its time of flight is ………. ? (Divya posted) Answer: If you take g=10 m/s2 then H=20m At max height, v=0 H=vt- 0....

## Question from Relative velocity

The distance between two cars decrease by 20m in 2s when they travel in opposite direction , and distance decrease by 1m in 1s when they travel in same direction. the speeds of cars are ………. ? (Divya posted this question)

## A question from velocity time graph

if graph of velocity v and time t for a particle moving along straight line is parabola symmetric about time axis, then the relation between acceleration a and time t for particle is …. ? (Divya posted this question)

## a ball is dropped from elevator moving upward with an accleration ‘a’ by a boy standing in it . the acceleration of ball with respect to elevator

Divya asks: a ball is dropped from elevator moving upward with an accleration ‘a’ by a boy standing in it . the acceleration of ball with respect to elevator is? (take upward direction positive)