A ball is dropped from the top of a building of height hit with speed 50 m/s at bottom of the building. The time at which balls will meet is.

Q. A ball is dropped from the top of a building $100m$ high. At the same instant another ball is thrown upwards with a velocity of $40m{s}^{-1}$ from the bottom of the building. The two balls will meet after.

Q. A ball is dropped from the top of a building $100\text{m}$ high. At the same instant, another ball is thrown upwards with a velocity of $40{\text{ms}}^{-1}$ from the bottom of the building. The two balls will meet after

Q. A ball is dropped from the top of a building $100\text{m}$ high. At the same instant another ball is thrown upwards with a velocity of $40{\text{ms}}^{-1}$ from the bottom of the building. The two balls will meet after

Q.

A ball is dropped from the top of a building at $t=0$. At a later time $t=t_0$, a second ball is thrown downward with an initial speed $v_0$. Obtain an expression for the time t at which the two balls meet.

Q.

A ball is dropped from the top of a building. The ball takes 0.5sec to fall past the 3m height of a window some distance from the top of the building. If the speed of the ball at top and the bottom is vb and vt, the establish a relationship between vb and vt take (g = 9.8m/s).