Question

An object of mass 5 kilograms is placed on a plane inclined at 36 degrees to the

horizontal. The object is moving down the plane with a velocity of 2 metres per second. The coefficient of kinetic friction between the box and the plank is 0.3.

Determine

(a) the frictional force. [3]

(b) acceleration of the box down the plane. [4]

(c) the distance the object travels down the plane in 8 seconds.

(g=10m/s^2)