Question

5. Ranu and Manu are two runners in a 500 m race. The graph shows their
progress in the race. Read the graph given below to answer the following
questions:
16O
00
200
16o Mano
pand
100
601
20
60
10
30
Time On cocondo)
GO
a) At what time were the two racers at par with each other?
b) Who finished the race first? Justify your answer.
c) Who had more speed in the first 10 seconds? Justify your answer.
d) Who was leading after 50 s? How far ahead was he?​

Answer 1

Given : Ranu and Mana are two runners in a 500 m race. The graph shows their  progress in the race

To Find : a) At what time were the two racers at par with each other?

b) Who finished the race first? Justify your answer.

3) Who had more speed in the first 10 seconds? Justify your answer.

d) Who was leading after 50 s? How far ahead was he?​

Solution:

two racers at par with each other  when both lines intersects

25 Sec

37 Sec

Manu finished the race first

Manu took 56 sec

Ranu takes 58 sec

Manu had more speed in the first 10 seconds as slope is more

slope = Speed = Distance/ time

Manu was leading after 50 s

430 - 380 = 50 m    ( 50 m ahead)

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