A player throws a ball upwards with an initial speed of $29.4\; m s^{-1}$. To what height does the ball rise and after how long (in second) does the ball return to the player's hands $?$ (Take $g=9.8 \;m s^{-2}$ and neglect air resistance).

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 ball is thrown vertically up ward. It has a speed of $10\;m/sec$ when it has reached one half of its maximum height. How high ($m$ માં) does the ball rise? (Take $g = 10 \;m/s^2$)

A juggler maintains four ball in vertically upward motion. He attempts next ball after $1/4\, sec$. For the shows to go on, what should be the height for which he throws the ball ?………$m$ $(g=10\,m/s^2)$

A body dropped from the top of a tower covers a distance $7 x$ in the last second of its journey, where $x$ is the distance covered in first second.$………\,s$ time does it take to reach the ground.