How much work is done lifting a 9.10-kg box straight up onto a shelf that is 1.80 m high

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.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)