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.
In physics, the momentum of an object is the amount of energy it  has moving in a direction. It is a product of its mass (weight) and  its velocity (speed and direction) as â¦ in (momentum = Mass times  velocity). Momentum changes when speed is increased or decreased,  its direction changes, or its mass changes.   An example of changing momentum is an object in space such as a  meteor falling to the earth.