If a body covers first half of its journey with uniform speed v1 and the second half of the Journey with uniform speed v2 then the average speed is

Question

If a body covers first half of its journey with uniform speed v1 and the second half of the Journey with uniform speed v2 then the average speed is (A) v1 + v2 (B) (2 v1 v2/v1 + v2) (C) ( v1 v2/v1 + v2) (D) v1 v2

Tardigrade Admin · Accepted Answer

Average velocity = (total displacement/total time)

Q. If a body covers first half of its journey with uniform speed $v_{1}$ and the second half of the Journey with uniform speed $v_{2}$ then the average speed is

$v_{1} + v_{2}$

$\frac{2 v _{1} v _{2}}{v _{1} + v _{2}}$

$\frac{v _{1} v _{2}}{v _{1} + v _{2}}$

$v_{1} v_{2}$

Average velocity = $\frac{t o t a l d i s pl a ce m e n t}{t o t a l t im e}$

Q. If a body covers first half of its journey with uniform speed v1​ and the second half of the Journey with uniform speed v2​ then the average speed is

v1​+v2​

v1​+v2​2v1​v2​​

v1​+v2​v1​v2​​

v1​v2​