An object (initially at rest) is dropped from a height h above the ground if it takes 4 seconds for the object to reach the ground, the height h is equal to

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

Why does lightning travel from clouds to the ground?

Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?