Question

Motorcycle covers the distance of 140 metre in 18 second find its speed per hour in kilometres

Answer 1

Answer:

28 km/hr

distance = 140

m and time = 18 sec then speed = 140/18 m/s then speed in km is 140/18 multiplied by 18/5 so speed is 28 km/hr

Answer 2

The speed of the motorcycle was 28 km per hour.

Step-by-step explanation:

∵ A motorcycle covers the distance in 18 seconds = 140 meter

∴ Motorcycle covers the distance in 1 second = $\frac{140}{18}$

∴ Speed of motorcycle per minute      =   $\frac{140}{18}\times 60$

                                                              = 466.66667

                                                              ≈ 466.67 meter/min

So, the speed per hour = 466.67 × 60

                                       = 28,000.2 meter per hour

1000 meter = 1 kilometer

28,000 meters = $\frac{28000.2}{1000}$

                         = 28.0002 ≈ 28 km

The speed of the motorcycle was 28 km per hour.

Learn more : https://brainly.in/question/15542289