Question

A passenger on a train traveling at 95 km/h north walks towards the back of the train at 2.0 km/h relative to the train. The passenger’s velocity relative to the ground is:

Answer 1

Given:

$v=95\:\rm km/h$

$u=2.0\:\rm km/h$

The passenger’s velocity relative to the ground is:

$$v_{\rm rel}=v-u=95-2.0=93\:\rm km/h$$