Speed, Distance & Time Speed, Distance, Time Calculations

Speed, Distance & Time Speed, Distance, Time Calculations

The aim of this lesson is to be able to use the correct formulas to calculate speed, distance or time

Reminder: How to change minutes into a decimal 15 mins 0 25 hour So: 3 hours 15 mins 3 25 hours 30 mins 0 5 hour So: 7 hours 30 mins 7 5 hours 45 mins 0 75 hour So: 2 hours 45 mins 2 75 hours

The 3 formulas for Speed, Time & Distance: Distanc Speed e Time Solving for Speed Distance Time Speed Distance Speed xTime Solving for Time Solving for Distance D Remember them from this triangle: S T

A windsurfer travelled 28 km in 1 hour 45 mins. Calculate his speed. Distance Time Speed 28 1 75 D S T 1 hour 45 mins 16 km/h Answer: His speed was 16 km / hour

A salesman travelled at an average speed of 50 km/h for 2 hours 30 mins. How far did he travel? Distance Speed x Time 50 x 2 5 125 km D S T 2 hour 30 mins Answer: He travelled 125 km

A train travelled 555 miles at an average speed of 60 mph. How long did the journey take? D Distanc eSpeed Time S T 555 60 9 25 hours 9 hours mins 15 Answer: It took 9 hours 15 minutes