8.6B Speed, Velocity and Acceleration

Front

What is speed?

Back

Speed is the distance traveled per unit of time, typically measured in units like meters per second (m/s) or miles per hour (mi/hr).

Front

What is velocity?

Back

Velocity is the speed of an object in a specific direction, such as 20 m/s west.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity per unit of time, measured in units like meters per second squared (m/s²).

Front

How do you calculate speed?

Back

Speed = Distance / Time.

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 is an example of constant speed?

Back

A car traveling at 60 mi/hr on a straight road without changing speed.

Front

What is an example of acceleration?

Back

A motorcycle going from 0 mi/hr to 60 mi/hr in 4 seconds.

Front

What unit is commonly used to measure acceleration?

Back

Meters per second squared (m/s²).

Front

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

Back

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

Front

What does a negative acceleration indicate?

Back

Negative acceleration indicates that an object is slowing down.