Question

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

Answer and Explanation:

Assuming the image attached is the distance/displacement-time graph of both cyclists A and B:

1. Cyclist B started at a position higher than 0 meters, whereas cyclist A started at 0 meters. Cyclist B started ahead.
2. When t = 7, it s observed that cyclist A is at a higher position on the graph than cyclist B, and is therefor travelling faster. B is lagging behind.
3. Cyclist A is travelling at a greater speed, because his distance covered is exponentially increased per time, whereas the Cyclist B only records marginal steady increase in distance covered.

I hope this explanation was easy to understand and helpful.