Question

In a 100 m race, the winner takes 10s to reach the finishing point. The average speed of the winner is ___________ ms-1 a) 5 b) 10 c) 20 d) 40

Answer 1

average speed= total distance/total time

here distance = 100m
and time= 10s
so, avg speed= 100/10
= 10 m/s

so your answer is b) 10m/s

hope it helps

Answer 2

Hey there!

Given that, In a 100m race, the winner takes 10s to reach the finishing point .

So , Distance travelled ( d) = 100 m.
Time taken = 10s

$\boxed{\mathbf { Average \: speed = \frac{ Distance \: of \: total \: journey }{ Time taken }}}$

Average speed

$= \frac{100}{10} \\ \\ \\= 10m/s$

Therefore , The average speed of the person is 10m/s

Required option is (b) 10