The gure below shows an athlete just about to do a push up. Which of the following statements provide the most complete explanation of the physics behind the push up. @ The athlete acts with a force F downwards on the ground. and from Newton's Third Law, the ground acts with an equal force upwards. This causes her to move upward. Q The athlete acts with a force F upwards on herself that is greater than her weight. This causes heir to move upward. O The ground acts with a force F upwards on the athlete that is greater than her weight. This causes her to move upward