Adiver who weighs 500 n steps off a diving board that is 10 meter above the water. the diver hits the water with what kinetic energy and what velocity (assume no friction)

Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.