Question

Starting from a pillar, you came 200m east at an average speed of 5 m/s and then run 280m west at an average speed of 4m/s to a lamp post. Then the average speed and average velocity of your race from pillar to lamp post are​

Answer 1

The average speed is 4.36m/s

hope this helps you

#beauty with brain ❣❣

Answer 2

Concept Introduction: Motion in one dimension is a basic part of Physics.

Given:

We have been Given: Speed from East is

$5m {s}^{ - 1}$

Distance from East is

$200m$

Speed from West is

$4m {s}^{ - 1}$

Distance from West is

$280m$

To Find:

We have to Find: Then the average speed and average velocity of your race from pillar to lamp post are?

Solution:

According to the problem, Total Distance travelled is

$200m + 280m = 480m$

Time taken for East distance is

$\frac{200}{5} = 40sec$

Time taken for West Distance is

$\frac{280}{4} = 70sec$

Total Time taken is,

$40 + 70 = 110 \: sec$

Therefore the average speed is,

$\frac{480}{110} = 4.36m {s}^{ - 1}$

Final Answer: The average speed is,

$4.36m {s}^{ - 1}$

#SPJ2