A body, thrown upwards with some velocity reaches the maximum height of $50 \,m$. Another body with double the mass thrown up with double the initial velocity will reach a maximum height of…………$m$

A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum inttial speed he can, equal to $49\; m s ^{-1} .$ How much time does the ball take to return to his hands? If the lift starts moving up with a uniform speed of $5\; m s ^{-1}$ and the boy again throws the ball up with the maximum speed he can, how long does the ball take to return to his hands?

A juggler tosses a ball up in the air with initial speed $u$. At the instant, it reaches its maximum height $H$, he tosses up a second ball with the same initial speed. The two balls will collide at a height

A ball is dropped from a building of height $45 \,m$. Simultaneously another ball is thrown up with a speed $40\, ms^{-1}$. Calculate the relative speed of the balls as a function of time.

From a building two balls $A$ and $B$ are thrown such that $A$ is thrown upwards and $B$ downwards with the same speed (both vertically). If $v_{A}$ and $v_{B}$ are their respective velocities on reaching the ground then,