Question

A car travels from A to B with a velocity of 36 km/h and returns to A with 72 km/h what are the average Velocity and average speed ?

Answer 1

Answer:

0m/s , 48m/s

Explanation:

HERE'S THE SOLUTION

Answer 2

Given:

The velocity of the car while traveling from A to B = 36 km/h

The velocity of the car while traveling from B to A = 72 km/h

To Find:

Average velocity and Average speed of the car

Solution:

Displacement is the shortest distance traveled by an object from its initial to final point.

$Average \: velocity =\frac{Displacement}{Time \:taken} \\\\ = 0 (as \: the \: car \: returns \: to \: its \: initial \: starting \: point )\\Average \: speed=\frac{2v1v2}{v1+v2}\\ =\frac{2\times 36\times72}{36+72} = \frac{5184}{108}\\=48km/h$

Hence, Average velocity = 0 and average speed = 48km/h is the required answer.

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