Which of these experiments would make use of quantitative data? a. study of the different amounts of time it takes water to evaporate completely b. study of the effects of sunlight on the color of construction paper c. study of the differences in cloud shapes on three successive days

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?