Question

a body travels from A to B at 40m/s . and from B to A at 60m/s. calculate the av. speed and the av.velocity

Answer 1

Answer:

here is the process

hope this helps you

Answer 2

Answer:

Average speed is 48 m/s and Average velocity is 0.

Explanation:

A body travels from A to B.

That time velocity is V₁

Again the body travels B to A.

That time velocity is V₂

We know Average speed=

$\frac{2V₁V₂}{V₁ + V₂}$

$= \frac{2 \times 60 \times 40}{60 + 40}$

$= \frac{4800}{100}$

= 48 m/s

Now we know Average velocity =

$\frac{total \: displacement}{total \: time}$

$= 0 \: (because \: displacement \: is \: zero \: here)$