Question

1 a A car is detected by a speed camera. The two detectors are separated
Question
by 5.0m. The car travels this distance in 0.2 s. What is its speed?
110
too fast?​

Answer 1

Answer: 200 kilometres per hour

Explanation: 1000 ×0.2

Answer 2

Answer:

25m/s

Explanation:

speed= distance ÷ time

distance= 5.0m

time=0.2 s

5.0 is the same as 5

0.2 is the same as $\frac{2}{10}$

5 ÷ 0.2 = 5÷$\frac{2}{10}$

when dividing fractions the first number or fraction stays the same and the second fraction is reciprocated meaning the numbers are switched

5 ×$\frac{10}{2}$

2 goes into itself once and goes into 10, 5 times .

so, you will be left with 5×5 which is equal to 25m/s

I have elaborated more on it in the pic below.