A 5.0-kg object is pulled along a horizontal surface at a constant speed by a 15 N force acting 20° above the horizontal. How much work is done by this force as the object moves 6.0m ?

Describe uniform velocity and variable velocity in short

During cooling, the kinetic energy of the molecules falls. why does this happen? a. the motion of the molecules increases. b. the motion of the molecules slows down. c. the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?