Final Exam Review

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken. It is usually expressed in units like km/min or m/s.

Front

How do you calculate average speed?

Back

Average speed = Total distance / Total time.

Front

What is the average speed of a runner who runs 10 km in 40 minutes?

Back

0.25 km/min.

Front

What are elements?

Back

Elements are pure substances that cannot be broken down into simpler substances by chemical means. Examples include hydrogen, gold, and iron.

Front

What is the difference between a compound and an element?

Back

A compound is a substance formed when two or more elements chemically bond together, while an element is a pure substance that cannot be broken down.

Front

What is speed?

Back

Speed is the distance traveled per unit of time, regardless of direction.

Front

What is constant velocity?

Back

Constant velocity means an object is moving at a fixed speed in a straight line without changing direction.

Front

What does it mean if an object has zero acceleration?

Back

It means the object is either at rest or moving at a constant velocity.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the formula for kinetic energy?

Back

KE = 1/2 mv².