The velocity of an object is the _____________of the object.

If a car is traveling at 15 mph and increases to a speed of 45 mph in 10 seconds, what is the acceleration?

The tendency of an object to stay at rest and the tendency of an object in straight-line motion to continue moving is ________

Why do passengers in a car move forward when the car comes to a sudden stop?

The change of motion of an object depends on

Why is the force going into a simple machine always greater than the force going out?

Which of the following is the force that resists sliding motion between two surfaces in contact?

Children are playing tug-of-war, a contest in which each team tugs on a rope to pull the other team across a line. Everyone is tugging on the rope. Why is no one moving?

What happens when a ball rolls uphill?

What decreases friction?

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