Two parallel train tracks run from North to South. On one track train A is moving with a speed 30 m/s from North to South. An the other track a train B is moving with speed 50 m/s from South to North. The relative velocity of train A with respect to train B is

Newton's Third Law of Motion applies to which of the following situations?

A. When a person jumps from the boat to the river, the boat goes backwards

B. Passengers standing in a bus fall in the back direction, when the stationary bus suddenly moves

C. When a person falls on the cement floor, he gets hurt

D. While catching a fast moving cricket ball, a fielder puts his hands backwards

For every action there is an equal and opposite reaction. The law was given by

A. Newton

B. Albert Einstein

C. Bohr

D. Handane

Newton's second law of motion:

A. Explains the relationship between forces on two mutually effective objects

B. Also known by the law of inertia

C. It is helpful to understand the effects of force

D. Also known by the law of conservation of energy

When the car turns on a curved road, the passengers sitting in it feel a force on themselves in the opposite direction of the center, this force is due to . . . . . . . .

A. centrifugal force

B. inertia

C. centripetal force

D. gravitational force