Question

a) Figure (14) shows distance – time graphs of two cyclists A and B. (x represents the distance and t represents time) i) Do both the cyclists start at the same point? If not, who is ahead at the starting point? ii) At t = 7s, which cylclist is lagging behind? iii) Which cyclist – A or B would be travelling with greater speed? How can you justify?

Answer 1

A or B would be travelling with greater speed? How and B. (x represents the distance and t represents time) i) Do both the cyclists start at the same point? If not, who is ahead at the starting point? ii) At t = 7s, which cylclist is lagging behind? i

Hopefully (◠‿◕)

Answer 2

Answer:

b'1. B is 100 km ahead of A.

2. speed of B =

PR

QR

=

2−0

150−100

=25Km/h

3. A will catch B at point Q after 2hrs and at a distance of 150Km.

4. speed of A=

OS

QS

=

2−0

150−0

=75Km/h

speed of B =25Km/h

so, the difference is 50Km/h

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