Question

for a race manish ran at a speed of 6m/s for 10 seconds.he ran a further 40m at a speed of 8m/s.what is his average speed for the race in km/hr?​

Answer 1

Answer:

Step-by-step explanation:

Distance=speed×time

1st case dist = 6×10m=60m in 10 sec

2nd case time=dist÷speed

Time=40÷8=5sec

So he covered (60+40=100m) in (10+5=15sec) speed =100÷15×(5÷18)=1.85kmph

{5÷18 for conversion of mps to kmph}