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.
What is a Physical Change? In a physical change, the internal make-up of the object (molecules) stays the same, even after the change â only its form changes. The resulting element can be reversed into the object before. Changes that can be reversed are called a Reversible Change. In a physical change, the state, shape or size of the object is changed. Pressure, temperature or motion can bring about a physical change. Change in state: Put some water into a plastic cup and place it in the freezer. After sometime the water changes into ice, right? The water moved from a liquid state to a solid state.