By winning his four events, Owens, at the age of 21, tied the world 100-meter dash record at 10.3 seconds, set Olympic records for the 200-meter dash (20.7 seconds) and the broad jump* (26' 5 1/4), and ran the first leg for the Olympic and world record-setting 400 meter relay team (39.8 seconds).
If an object has a net force acting on it, it will accelerate. The object will speed up, slow down or change direction. An unbalanced force (net force) acting on an object changes its speed and/or direction of motion. An unbalanced force is an unopposed force that causes a change in motion. A net force = unbalanced force. If however, the forces are balanced (in equilibrium) and there is no net force, the object will not accelerate and the velocity will remain constant.. Unbalanced Forces: Placing a box on the seesaw unbalances it.
Einstein's Theory of Relativity changed the way we think about space and time. General Relativity says that large objects cause space to bend in the same way that putting a tennis ball on a thin sheet would cause the sheet to bend. The larger the object, the more space bends.