average speed-the total distance traveled by the time taken. What is Josh's average speed for running the 100m dash.
instantaneous speed-the speed of an object at one instant of time. Torri's instantaneous speed was 4km/hr.
velocity-the speed of the object and the direction of its motion. What was the velocity of the baseball?
acceleration- the change in velocity divided by the time it takes for the change to occur. Mr. Conrad's acceleration was constant.
mass- The amount of matter in an object. The mass of the cow was bigger than the mass of a baseball.
inertia- The tendency of an object to resist change in its motion. The horse had a very high inertia.
momentum- To measure how hard it is to stop an object and depends on the object's mass and velocity. When the bowling ball hit the pins some of its momentum transferred to the pins.
law of conservation of momentum- the total momentum of objects that collide is the same before and after the collision. When Jason and James collided it proved the law of conservation of momentum to be correct.
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