Question

How far does a lorry move if its travelling at 50mph for 2hours​

Answer 1

100 metre is right answer

Answer 2

$speed = \frac{distance}{time} \\ = 50 \times 2 \times 60 \\ = 6000miles \: per \: second \\ = \frac{6000}{60sec} = 100mph$

yeah I know you thought it is just main calculation

not any detail

hmm