a. A rail road car of mass M is moving without friction on a straight horizontal track with a velocity ct. A man of mass m lands on it normally from a helicopter. What will be the new velocity of the car? ltbgt b. If now the man begins to run on it with speed um with respect to car in a direction opposite to motion of the car, what will be the new velocity of the car?

A railroad flatcar of mass M can roll without friction along a straight horizontal track. Initially, a man of mass 'm' is standing on the car, which is at rest. What is the velocity of the car if man runs to the left so that his speed relative to the car is v_(rel) .

a. A rail road flat car of mass M can roll without friction along a straight horizontal track . Initially, a man of mass m is standing on the car which is moving to the right with speed v_(0) . What is the change in velocity of the car if the man runs to the left so that his speed relative to the car is v_(rel) just before he jumps off at the left end? b. If there are n men each of mass m on the car, should they all run and jump off together or should they run and jump one by one in order to give a greater velocity to the car?

a. A rail road flat car of mass M can roll without friction along a straight horizontal track . Initially, a man of mass m is standing on the car which is moving to the right with speed v_(0) . What is the change in velocity of the car if the man runs to the left so that his speed relative to the car is v_(rel) just before he jumps off at the left end? b. If there are n men each of mass m on the car, should they all run and jump off together or should they run and jump one by one in order to give a greater velocity to the car?

A man of mass m stands on a long flat car of mass M , moving with velocity V.If he now begins to run with velocity u, with respect to the car , in the same direction as V, the the velocity of the car will be

A man of mass m stands on a long flat car of mass M , moving with velocity V.If he now begins to run with velocity u, with respect to the car , in the same direction as V, the the velocity of the car will be

A boy of mass 40 kg stands on a rail road car of mass 60 kg , moving with velocity 10 m//s . Now , the boy begins to run with velocity 5 m//s , with respect to the car , in the same direction , the velocity of the car will be

A car of mass M is moving with a uniform velocity upsilon on a horizontal road when the hero of a Hindi film drops himself on it from above. Taking the mass of the hero to be m what will be the velocity of the car after the event?

A car of mass M is moving with a uniform velocity upsilon on a horizontal road when the hero of a Hindi film drops himself on it from above. Taking the mass of the hero to be m what will be the velocity of the car after the event?

A girl of mass 50 kg stands on a railroad car of mass 75 kg moving with velocity 20 ms^(-1) . Now , the girl begins to run with a velocity of 10ms^(-1) with respect to the car in the same direction , as that of the car. The velocity of the car at this instant will be

A girl of mass 50 kg stands on a railroad car of mass 75 kg moving with velocity 20 ms^(-1) . Now , the girl begins to run with a velocity of 10ms^(-1) with respect to the car in the same direction , as that of the car. The velocity of the car at this instant will be