A particle of mass 'm' and initially at rest is acted by a force `F=a` t. Newtons best representation of force-displacement graph is:

A particle of mass m , initially at rest , is acted upon by a variable force F for a brief interval of time T . It begins to move with a velocity u after the forrce stops acting . F is shown in the graph as a function of time. The curve is a semicircle.

A particle of mass m initially at rest. A variabl force acts on the particle f=kx^(2) where k is a constant and x is the displacment. Find the work done by the force f when the speed of particles is v.

A particle of mass m initially at rest. A variabl force acts on the particle f=kx^(2) where k is a constant and x is the displacment. Find the work done by the force f when the speed of particles is v.