If someone jumps to the shore from a boat, the boat moves in opposite direction. Explain why.

True or False In a symport both in molecules cross the membrane in the same direction termed symport and if they move in opposite direction it is termed antiport.

A and B are two points of 150 km apart on a highway. A car starts from A and another from B at the same time. If they move in the same direction, they meet in 15 hours, but if they move in opposite direction, they meet in one hour. Find their speeds.

In a passive transport across a membrane, when two protein molecules move in opposite direction and independent of each other. It is called as …………..

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :-Places A and B are 80 km apart from each other on a highway. A car starts from A and another from B at the same time. If they move in the same direction they meet in 8 hours , and if they move in opposite direction, they meet in 1 hour and 20 minutes respectively. Find the speed of the cars.

Why our elbow cannot move in backward direction?

An induced current has no direction of its own. Explain, why?

A nucleus is at rest in the laboratory frame of reference. Show that if it disintegrates into two smaller nuclei the products must move in opposite directions.

A 2 kg ball moving at 24 ms undergoes inelastic head on collision with a 4 kg ball moving in the opposite direction at 48 ms. If the coefficient of restitution is 2/3, their velocities in ms-after impact are