Question

A objecttravels 20 m in 45 sec and another 3 m in 6 sec . find the averge

Answer 1

total distance=(20+3)=23m

total time=(45+6)=51 sec

thus average speed=(23÷51)m/s=0.451m/s

Answer 2

d'=20m, t'=45sec

d"=3m. t"=6sec

average=( d'+d")/(t'+t")

=(20+3)/(45+6)=23/51 m/sec