Question

calculate the net force acting on a bus loaded with pesangars of mass 2000kg moving with uniform velocity of 60kg/h

Answer 1

Force= mass*acceleration.

Here, the  bus is moving with uniform velocity, therefore, acceleration is zero.
Therefore, F=2000 * 0
 = 0 N.

Thank you.
Hope this will help you.

Answer 2

Net force acting on a object is given by the product of its mass and acceleration. That is F = ma.
Here, the bus is moving with uniform velocity. That means acceleration of the bus is 0. 
Thus net force acting on it = 2000×0 = 0 N



Note: The net force is given by F=ma. (which is 0 in this case). But there are forces acting on the bus which are not zero. Like weight of bus, normal force from road, friction force, pull of engine, air drag etc. But their sum is zero.