Laws of Motion ...

Force of 5 N acts on a body of weight 9.8 N. what is the acceleration produced in ms^–2

A lift is going up. The total mass of the lift and the passenger is 1000 kg The variation in the speed of the lift is as given in the graph. The tension in the rope pulling the lift at t = 10.5 sec will be

Same force acts on two bodies of different masses 2 kg and 4 kg initially at rest. The ratio of times required to acquire same final velocity is

Which of the following quantities measured from different inertial reference frames are same

10,000 small balls, each weighing 1 g strike one square cm of area per second with a velocity 100 ms^–1in a normal direction and rebound with the same velocity. The value of pressure on the surface will be

When the speed of a moving body is doubled

A particle moves in the XY Plane under the action of a force F such that the components of its linear momentum P at any time t are Px = 2 cost, Py = 2 sint. The angle between F and P at time t is

A player caught a cricket ball of mass 150 g moving at the rate of 20 ms^–1. If the catching process be completed in 0.1 s the force of the blow exerted by the ball on the hands of player is

Swimming is possible on account of