ANSWER QUICKKK A tennis ball is thrown up in the air. As the tennis ball travels upward, kinetic energy is converted to potential energy.

Use the graph to determine what the kinetic energy of the tennis ball will be when the potential energy is 9 joules.

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.