A car is initially travelling at $30$ m$/$s$,$ which is above the speed limit$.$ The driver sees a speed limit trap ahead and applies the brakes for $5$ seconds, causing the car to slow down by $2$m$/$s every second while the brakes are on$.$

$($a$)$ How far does a car travel whilst the brakes are being applied?

 $($b$)$ How far would the car have traveled in the $5$ seconds, if it had not slowed down? 

Answer rating: 100% (QA)

Lets break this down a The car initially travels at 30 ms and slows down for 5 seconds at a ra... View the full answer