Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.

Which of the following correctly describes the early view of catastrophism?

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?