Question

A race car accelerates from rest to a velocity of +90 m/s over a distance of 423m. Determine the acceleration of the race car.

Answer 1

9.57m/s²

Step-by-step explanation:

Given parameters:

Initial velocity = 0m/s

Final velocity = 90m/s

Distance = 423m

Unknown:

Acceleration of the race car = ?

Solution:

To solve this problem, we should apply one of the appropriate motion equations;

V² = U² + 2as

Where V is the final velocity

U is the initial velocity

a is the acceleration

s is the distance

90² = 0² + 2 x a x 423

8100 = 846a

a = 9.57m/s²