Question

The average speed of a bicycle, an athlete and a car are 18km/h, 7m/s and 2km/min. respectively. which of the three is the fastest and which is slowest.​

Answer 1

Hey mate!!!

Convert all speeds to the same units and than compare them.

For the bicycle, 18 km/h  

= 18000 m/3600 s  

= 5.0 m/s

For the car 2 km /min  

= 2000 m/60 s = 33.3 m/s

The athlete runs at 7 m/s. The bike is slowest and the car is fastest in this case.

Hope it helps you!!!!!

Answer 2

Answer:

speed of bicycle

18km/hr=18×5/18=1×5=5m/s

speed of an athlete=7m/s

speed of car

2km/min=2000/60=33.33m/s

speed of car is fastest and speed of bicycle is slowest.