First slide

Average Speed

Question

A car moves from A to B with a speed of 30 km/h and from B to A with a speed of 20 km/h. What is the average speed of the car?

Moderate

A

25 km/h
B

24 km/h
C

50 km/h
D

10 km/h

Solution

v₁= speed of car from A of B
v₁= 30 km/h
v₂= speed of car from B of A
v₂= 20 km/h
$v_{avg} = \frac{2 v_{1} v_{2}}{v_{1} + v_{2}} = 24 km / h$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App