Q24 of 139 Page 20

Arrange the following speeds in increasing order (keeping the least speed first) :

(i) An athlete running with a speed of 20 m/s.


(ii) A bicycle moving with a speed of 400 m/min.


(iii) A scooter moving with a speed of 60 km/h.

Speed of athelete = 20 m/s

Speed of bicycle = 400 m/min = 400/60 m/s = 6.66 m/s


Speed of scooter = 60 km/h = 60000/3600 m/s = 16.66 m/s


6.66 m/s < 16.66 m/s <20 m/s


i.e. 400 m/min < 60 km/h < 20 m/s


More from this chapter

All 139 →
22

State whether speed is a scalar or a vector quantity. Give reason for your choice.

 23

Bus X travels a distance of 360 km is 6 hours. Whereas bus Y travels a distance of 427 km in 7 hours. Which bus travels faster?

 25

Write the formula for acceleration. Give the meaning of each symbol which occurs in it.

 25

A train starting from railway Station attains a speed of 30 m/s in one minute. Find its acceleration.