A cycle together with its rider weighs 100 kg. How much work is needed to set it moving at 3 m/s `(AS_(1))`

A wagon is moving along a straight railway track with a velocity of 3.2 m cdot s^(-1) . The wagon is being loaded with coal in moving condition at a rate of 540 kg. min^(-1) . How much force is to be applied to move the wagon at a constant velocity?Assume, the initial velocity of the coal at horizontal direction is zero.

The ionization energy of sodium is 495 kJmol^(-1) How much energy is needed to convert atoms present in 2.3 mg of sodium into sodium ions

When the load on a wire is increased from 3kg to 5kg, the elongation of the wire increases from 0.6mm to 1mm.How much work is done during this extension of the wire?

A particle of mass 0.5 kg travels in a straigh line with a velocity v =5x^(5//2)m*s^(-1) . How much work is done by the net force during the displacement from x=0 to x=2 m ?

A cycle with the rider has a total mass of 80 kg, it rolls down 60 m on a plane of inclination 30^@ . What is the total work done by gravity on the cycle ?