A sports car is travelling at 40m/s^-1. The driver see emergency ahead and 0.50 second after that, slams on the brakes.*

The acceleration of the car is -4m/s^-2.

a) what distance does the sports car travel before the driver slams on the brakes?

Thats adjectives!

I think the answer is 20m but i m not sure!

Whats the fastest you hold gone on...



Answers:    I would hold said 20m but then I saw the acceleration of -4m/s...

So... coup¨¦ initially travelling at 40m/s, in another partially a second with a -4m/s acceleration it is travelling at 42m/s. Which medium the average speed over that half second is 41m/s - giving a distance travelled of 20.5 metres.

I'm in principle sure 20.5 metres is the correct answer.

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