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# help

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https://vle.mathswatch.co.uk/images/questions/question2357.png

May 19, 2020

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I got the picture here.

To find the average speed of the car, you need to take the total change in distance divided by the total change in time.

Here, the car moved 9 marks. Marks are 0.8 meters apart, so the car moved $$9\times0.8=7.2$$ meters.

The question gives that it took 0.5 seconds for the car to move that far, so that gives us $$7.2\div0.5=\boxed{14.4}$$ meters per second.

I hope this helps!

May 19, 2020