Question

Aobject travels 18m in 4s and returns back in 8s. The average speed of the object is

Answer 1

We have,
Distance covered by the object =18m
Time taken=4seconds

Now,Speed when returning back =8seconds
then average speed=Total distance covered /Total Time taken
=18m+18m/4seconds+8seconds
=36m/12seconds
=3m/sec

Thus,We get the average speed of the object is 3m/sec