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 anoth

1.	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
Answer» `t^(0)` `t^(1)` `t^(2)` `(1)/(t)` ANSWER :A