Awater balloon was dropped from a high window and struck its target 1.1 seconds later. if the balloon left the person's hand at -5 meters/sec what was the velocity on impact?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost