An object is moving on a plane surface with uniform velocity `10ms^(-1)` in presence of a force 10N. The frictional force between the object and the surface is

An object of mass 1 kg moving on a horizontal surface with initial velocity 8 m/s comes to rest after 10 s. If one wants to keep the object moving on the same surface with velocity 8 m/s the force required is

An object of mass 1 kg moving on a horizontal surface with initial velocity 8 m/s comes to rest after 10 s. If one wants to keep the object moving on the same surface with velocity 8 m/s the force required is

The velocity - time (V - t) graph of an object of mass 2 kg is as shown in figure while it is moving on a rough horizontal surface. The coefficient of friction between object and the surface is (g = 10 m/s^2)

A block moving on a horizontal surface with velocity 20 ms^(-1) comes to rest because of surface friction over a distance of 40 m. Taking g = 10 ms^(-2) , the coefficient of dynamic friction is :

A block moving on a horizontal surface with velocity 20 ms^(-1) comes to rest because of surface friction over a distance of 40 m. Taking g = 10 ms^(-2) , the coefficient of dynamic friction is :