Question 128: Motion in 1D

Question

A vehicle travels half the distance with speed $$v$$ and the remaining distance with speed $$2 v$$. Its average speed is :

Accepted Answer

$$V_{	ext {avg }}=\frac{2 v_{1} v_{2}}{v_{1}+v_{2}}=\frac{2(v)(2 v)}{v+2 v}=\frac{4 v^{2}}{3 v}=\frac{4 v}{3}$$

Answer

$$\frac{2 v}{3}$$

Answer

$$\frac{4 v}{3}$$

Answer

$$\frac{3 v}{4}$$

Answer

$$\frac{v}{3}$$

Motion in 1D