A bird flies from a tree A to the tree B with the speed of 40 km h–1 and returnsto tree A from tree B with the speed of 60 km h–1. What is the average speedof the bird during this journey?
A bird flies from a tree A to the tree B with the speed of 40 km h–1 and returnsto tree A from tree B with the speed of 60 km h–1. What is the average speedof the bird during this journey?
Ans: – We all know that average speed= (total distance/ total time).
So, average speed is =(40+ 60 /2)= 50 km/h.
Three players P, Q and R reach from point A to B in same time by followingthree paths shown in the Fig. 9.19. Which of the player has more speed, whichhas covered more distance?
Ans: – From the image we seen that the path of R is more as compared to the other as it covers more distance from others.
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