Question

A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey.

Solution

Time taken to go =hr =hr Time taken to return = hr Total distance = (100 + 100) km = 200 km total time taken = (53 + 52)hr =  hr  average speed =                                =                                                              = 48 km/hr Hence, the average speed is 48 km/hr.   PhysicsScience for Ninth Class - Part I - PhysicsStandard IX

Suggest Corrections

4

Similar questions
View More

Same exercise questions
View More

People also searched for
View More