Question

Formula one racers speed up much more quickly than normal passenger vehicles, and they also can stop in a much shorter distance. a formula one racer traveling at 90 m/s can stop in a distance of 110 m. What is the magnitude of the car's acceleration as it slows during braking?

Answer 1

Answer:

a = -36.8 m/s/s

Explanation:

Initial speed of the car

$v_i = 90 m/s$

finally car will stop after it cover the distance

$d = 110 m$

so we have

$v_f^2 - v_i^2 = 2 a d$

here we have

$0 - 90^2 = 2(a) (110)$

$a = \frac{90^2}{220}$

$a = -36.8 m/s^2$