Joules are nm, which is kg middot m^2/s^2 use this relationship and 1 btu = 1.0551 kj to determine what btu using primary english units (ft, lb_m, degree f, sec, etc.)

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.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Most of the volume of an atom is occupied by the