Question

a body moving with a consonant velocity along a straight line PQR takes 30s to go from P to Q and 10s to go from P to R. If PR is 4m find PQ

Answer 1

We have:

$$v_1=v_2\to \frac{PQ}{t_1}= \frac{PR}{T}$$

$$\frac{PQ}{30}= \frac{4}{30+10}$$

$$PQ=3\ m$$