Speed (Solving problems)：練習問題

A toy car travels a distance of 180 metres at a constant speed of 12 m/s. How many seconds does the toy car take to finish the journey?

A car travels along a highway. It covers a distance of 3 kilometres in 2 minutes. What is the speed of the car in metres per second (m/s)?

The graph below shows the distance traveled by a car over a period of 5 hours. Based on the data in the graph, what was the average speed of the car for the entire journey?

A boat travels at a constant speed of \( 24 \) km/h. How far will it travel in \( 2 \) hours?

A train travels at a speed of \( 90 \) km/h. How many minutes does it take to travel \( 15 \) km?

A cyclist travels at a constant speed of \( 15 \) km/h. How many kilometres will the cyclist travel in \( 20 \) minutes?

A car travels at a constant speed of \(80\) km/h. How far does it travel in \(45\) minutes?

A train travels \( 180 \) km at a speed of \( 90 \) km/h. On its return journey, it encounters a delay and its speed is reduced to \( 60 \) km/h. How many more minutes does the return journey take compared to the first journey?

A toy car travels a distance of 45 metres in 15 seconds.
(a) Find the speed of the toy car in metres per second (m/s).
(b) If the toy car continues at the same speed, how many metres will it travel in 1 minute?

A courier leaves the office at 09:15 to deliver a parcel to a location \( 48 \) km away. He travels at an average speed of \( 64 \) km/h.
(a) How many minutes does the journey take?
(b) At what time does the courier arrive at the destination?
(c) If he stays at the destination for \( 15 \) minutes and then returns to the office at a speed of \( 40 \) km/h, what time will he arrive back at the office?