An Olympian lifts a 1,375-kilogram set of weights a vertical distance of 2 meters in the weightlifting event. The force of gravity equals 9.8 m/s. What is the potential energy of the weights?

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

Anybody wanna ? (picture included? )

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than