Important Terms for Unit 4

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Presentation transcript:

Important Terms for Unit 4

FORCE A PUSH or PULL.

SPEED The rate at which someone or something is able to move or operate.

ACCELERATION Increase in the rate of speed of something.

VELOCITY Speed and direction.

INERTIA A tendency to do nothing or remain unchanged.

UNBALANCED FORCE When unequal forces cause objects to move.

BALANCED FORCE When 2 equal forces act on an object. Generally, does NOT move.

FRICTION Resistance when an object moves over another surface.

Amount of energy transferred by a force. WORK Amount of energy transferred by a force.

Speed vs Acceleration

What is speed? The rate at which someone or something is able to move or operate.

What is acceleration? Increase in the rate or speed of something.

How can I calculate speed? Average Speed = Distance Time

Graph what acceleration looks like on a distance/time graph:

Motion of a Line

Describe the motion: Constant Speed (Never changes speed)

Describe the motion: Object is NOT moving. Time is changing, but distance is not.

Describe the motion: Object is ACCELERATING. Getting faster!

Describe the motion: Object is turning around and headed back to its starting location.

Average Speed Examples

A quarterback throws a football 40 yards in 4 seconds A quarterback throws a football 40 yards in 4 seconds. What is the average speed of the football? Average Speed = Distance Time

What is the average speed of the runner at 4 sec?

A plane flies from Houston to NYC in 4 hours A plane flies from Houston to NYC in 4 hours. The distance it travelled was 1627 miles. What was the average speed of the plane?

What is the average speed of the boat between 4 and 6 minutes?