Two particles P and Q move in a straight line AB towards each other. P starts from A with velocity `u_(1)` and an acceleration `a_(1)` Q starts they pass each other at the midpoint of AB and arrive at the other ends of AB with equal velocities.

Two bodies move in a straight line towards each other at initial velocities v_(1) and v_(2) and with constant acceleration a_(1) and a_(2) directed against the corresponding velocities at the initial instant. What must be the maximum initial separation between the bodies for which they meet during the motion ?

Two bodies move in a straight line towards each other at initial velocities v_(1) and v_(2) and with constant acceleration a_(1) and a_(2) directed against the corresponding velocities at the initial instant. What must be the maximum initial separation between the bodies for which they meet during the motion ?

Two bodies move in a straight line towards each other at initial velocities v_(1) and v_(2) and with constant acceleration a_(1) and a_(2) directed against the corresponding velocities at the initial instant. What must be the maximum initial separation between the bodies for which they meet during the motion ?

Two trucks are moving in a straight line towards each other at initial velocities u_(1) and u_(2) and with constant retardations a_(1) and a_(2) . If the initial separation between them is d , find the minimum value of d for no collision.

Two particles P and Q move towards with each other from rest with the velocities of 1 and 20 ms^(-1) under the mutual force of attraction. The velocity of centre of mass is