8.6B Speed, Velocity, Acceleration

Front

What is speed?

Back

Speed is how much distance is covered over a period of time.

Front

What is velocity?

Back

Velocity is speed in a specific direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity over time.

Front

What does it mean when an object is standing still?

Back

An object is standing still when its position does not change over time.

Front

How does direction affect velocity?

Back

Velocity includes direction; changing direction while maintaining speed results in a change in velocity.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What happens to the velocity of a car when it rounds a corner at constant speed?

Back

The velocity changes because the direction of the car changes.

Front

What is a common unit of speed?

Back

A common unit of speed is meters per second (m/s).

Front

What is a common unit of acceleration?

Back

A common unit of acceleration is meters per second squared (m/s²).

Front

If a car travels 100 meters in 5 seconds, what is its speed?

Back

Speed = Distance / Time = 100 meters / 5 seconds = 20 m/s.