7.7A Calculate Speed

Front

What is speed?

Back

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

Front

What is the formula to calculate speed?

Back

Speed = Distance ÷ Time.

Front

What are common units of speed?

Back

Common units of speed include kilometers per hour (km/h), meters per second (m/s), and miles per hour (mph).

Front

What is the average speed of an object?

Back

Average speed is the total distance traveled divided by the total time taken.

Front

If a car travels 120 km in 2 hours, what is its speed?

Back

60 km/h.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What does it mean if an object has a speed of 0?

Back

A speed of 0 means the object is at rest and not moving.

Front

What is a common misconception about speed?

Back

A common misconception is that speed can only be measured in km/h; however, it can also be measured in other units like m/s or mph.

Front

How do you convert km/h to m/s?

Back

To convert km/h to m/s, divide the speed by 3.6.

Front

What is the average speed of a freight train that travels 150 meters in 15 seconds?

Back

10 m/s.