Question

A car travels along a straight line for first half time speed with 10km/h and second half with speed 60km/h. find average speed.

Answer 1

Hey.

Here is the answer.

let total time be 2h

1st half time = 1 hr ; speed = 10kmph

distance travelled in 1st half time = 10 km

2nd half time = 1 hr; speed = 60kmph

distance travelled in 2nd half time= 60 km

Total distance travelled= 10+60=70km

total time taken= 2h

average speed= total distance travelled/total time taken

= 70/2 = 35 kmph

Thanks.