A ball ` A` is dropped from a building of height ` 45 m`. Simultaneously another ball ` B` is thrown up with a speed ` 40 m//s`. Calculate the relative speed of the balls as a function of time.

A ball is dropped from a building of height 45 m. Simultaneously another ball is thrown up with a speed 40 m/s. Calculate the relative speed of the balls as a function of time.

A ball is dropped from a building of height 45 m. Simultaneously another ball is thrown up with a speed 40 m/s. The relative speed of the balls varies with time as

A ball is dropped from a building of height 45 m. Simultaneously another ball is thrown up with a speed 40 m/s. The relative speed of the balls varies with time as

A ball is dropped from tower of height 45 m. At the same moment another ball is thrown up with a speed of 40 ms from base. What is the relative speed of the balls as a function of time?

A ball is dropped from the building and simultaneously another ball is projected upward with some velocity. Describe the change in relative velocities of the balls as a function of time.

A ball is dropped from the top of a tower 100m high. Simultaneously another ball is thrown upward with a speed of 50m/s . After what time do they cross each other ?

A ball is dropped from the top of a building of height 80 m. At same instant another ball is thrown upwards with speed 50 m/s from the bottom of the building. The time at which balls will meet is