The relation between time and distance is , where and are constants. The retardation is
The coordinates of a moving particle at a time t, are given by, x=5 sin 10t, y=5 cos 10t. The speed of the particle is
A satellite in force-free space sweeps stationary interplanetary dust at a rate dM/dt=v where M is the mass, v is the velocity of the satellite and is a constant. What is the deacceleration of the satellite ?
A body of mass 3 kg is moving under a force, which causes a displacement in it, given by (in m). Find the work done by the force in first 2 seconds .
1. 2 J
2. 3.8 J
3. 5.2 J
4. 24 J