If we decrease the time it takes for a car to travel over the same distance, this will

a).decrease the speed.
b).decrease the velocity.
c).increase the speed.
d).have no effect on velocity or speed.

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Ain is , is 's of ? 0.62 0.79 1.27 1.50