Work, Energy an...

The graph between the resistive force F acting on a body and the distance covered by the body is shown in the figure. The mass of the body is 25 kg and initial velocity is 2 m/s. When the distance covered by the body is 4 m, its kinetic energy would he

A particle of mass 0.1 kg is subjected to a force which varies with distance as shown in fig. If it starts its journey from rest at x = 0, its velocity at x = 12 m is

A particle is dropped from a height h. A constant horizontal velocity is given to the particle. Taking g to be constant everywhere, kinetic energy E of the particle w.r.t. time t is correctly shown in

Consider a rubber ball freely falling from a height h = 4.9 m onto a horizontal elastic plate. Assume that the duration of collision is negligible and the collision with the plate is totally elastic. Then, the velocity as a function of time and the height as a function of time will be

The potential energy of a system is represented in the first figure. The force acting on the system will be represented by

A particle, initially at rest on a frictionless horizontal surface, is acted upon by a horizontal force which is constant in size and direction. A graph is plotted between the work done (W) on the particle, against the speed of the particle, (v). If there are no other horizontal force acting on the particle, the graph would look like

Which of the following graphs is correct between kinetic energy (E), potential energy (U) and height (h) from the ground of the particle?

The force acting on a body moving along x-axis varies with the position of the particle as shown in the fig. The body is in stable equilibrium at