Question #5f7c5

1 Answer
Jan 4, 2017

The distance =800m

Explanation:

We use the equation

v^2=u^2+2as

The initial velocity is u=80ms^-1

The final velocity is v=0 (the racecar stopped)

The acceleration is a=-4ms^-2

The distance is s=-u^2/(2a)=-80^2/(2*(-4))

=80*80/8=800 m