Question

The diagram below shows the velocities of two cyclists.

From the frame of reference of cyclist 2 what is the velocity of cyclist 1

Answer 1

Cyclist #2 will say that Cyclist #1 is going west at 5 m/s.

Answer 2

5 m/s west

Step-by-step explanation:

We have to find the velocity of cyclist 1 From the frame of reference of cyclist 2 . From the figure, both cyclists are moving in west direction. So, the velocity of cyclist 1 w.r.t cyclist 2 can be determined using the concept of relative velocity.

`v_(1,2)=v_1-v_2`

Putting v₁ = 8 m/s and v₂ = 3 m/s

So,
`v_(1,2)=8-3=5\ m/s` i.e. 5 m/s west

Hence, the correct option is (d) " 5 m/s west ".