Question

a motorcyclist drives from A to B with a uniform speed of 40km/h and returns back with a speed of 50km/h . Find his average speed and average velocity. it's urgent please answer!!!!!!!!!!!!!!!!​

Answer 1

Given that ,

A motorcyclist drives from A to B with a uniform speed of 40 km/h and returns back with a speed of 50 km/h

We know that , the average speed when object moves equal distance with different speed is given by

$\large \sf \fbox{V_{av} = \frac{2 v_{1}v_{2}}{v_{1} + v_{2}} }$

Thus ,

$\sf \mapsto V_{av} = \frac{2 \times 40 \times 50}{40 + 50} \\ \\ \sf \mapsto V_{av} = \frac{400}{90} \\ \\ \sf \mapsto V_{av} = 4.4 \: \: k/hr$

$\therefore \sf \underline{The \: average \: speed \: is \: 4.4 \: km/hr}$

and

Since , the displacement is zero

$\therefore \sf \underline{The \: average \: velocity \: is \: 0 \: km/hr}$

Answer 2

Answer:

read the given lines and complete the story in 150 to 200 words give a suitable title to your story when amit walk up in the morning and looked at his face in the minute he did not recognise the face looking back at him this is not me he cried aloud.....

please send short story 150 to 200 words only

Explanation:

suitable title please