A Wagon weighing 1000 kg is moving with a velocity 50 km h¹ on smooth horizental rails. A mass of 250 kg is copped into il. The velocity with which it moves now is

Swimming is possible on account of

A cold soft drink is kept on the balance. When the cap is open, then the weight

A body of mass 5 kg s arts from the arigin with an initial velocity  . If a constant Force  acts on the body. the lime in which the y-component of the velocity becomes nero is

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

A particle moves in the XY Plane under the action of a fore F sach that the components of its linear momentum P at any time t are P_x =2cost, TY=2 sint . The angle betwcen F and P at time t is

When the speed of a moving body is doubled

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

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

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

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= 1.5sec will be

Force of 5 N acts un a body of weigh: 98 N. what is the acceleration produced in ms^-2

A particle moves in the X-Y plane under the influence of a force such that its linear momentum is  siny (kt)] where  and  and constants. The angle between the force and momentum is.

Formula for true force is

A ball of mass 0.2 k_b is thrown vertically up wands by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes up to 2m height further, find the magnitude of the force. (Consider g=10ms^-2 )

Let  denote the set of all integers and  defined by is

The letter Z represents set of Integers. We should know definition of different types of functions to solve such questions.