a bicycle being pedaled moves because of

if less force is applied, an object will move

friction makes objects

more friction is caused by rubbing between two objects that are

Earth's gravity pulls objects toward the center of the

the amount of work done, depends on the

if you walked at 6 km/ hour, how far would you walk in 1/2 hour?

when you change your direction of movement, you affect your

the tendency of an object to stay still is called

A measure of the force that gravity exerts on an object is

when you rub your hands together, friction makes them

to reduce friction on the moving parts of a machine, you could add

the type of friction that helps a parachute float slowly to Earth is

how fast an object moves and in what direction is called

The opposing force to action is

a force that gravity exerts on an object's mass is called

when you measure how far something travels in a certain amount of time, you are measuring

a push or pull is an example of

the amount of matter an object has is its

if engineers want to reduce air resistance, they design a car that is

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