Question

an object travel 18m in 5 sec and 20m in 7sec find average speed of the object

Answer 1

Answer:

Find speed in both cases.

in first case it is 18/5 m/s

in second case it is 20/7 m/s

now find average of both speeds

which is3.23 m per s

this is because the time intervals are different and you cant solve it directly