Question

6. A car travels along a straight line for first half time with a
speed of 40 km h and the second half time with a speed
of 60 km h-! Find the average speed of the car.
Find (a) th
object int
14. The velo
A motor
Ans. 50 km h-17​

Answer 1

Answer:

50 km/h

Explanation:

let total time taken be 2t ( in hours) during journey.

speed of car in first half time= distance × time = 40t

speed of the car in second half time =

distance × time = 60t

Average speed = total distance/ total time = (40t +60t)/2t= 50 km/h

Hope it will help you......