The heat of fusion for water is the amount of energy needed for water to
a. freeze.
b. boil.
c. melt.
d. evaporate

Abody of weight 60 kg is standing in a lift the lift going upward with a uniform velocity of 4.9 metre per second slows down and stops in two seconds then apparent weight of the body during the slow down process is

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.