Question

A race car traveling at 44 m/s slows down uniformly to a stop in 10 seconds. What is its acceleration?

a) -4.4 m/s²
b) -0.44 m/s²
c) 4.4 m/s²
d) 0.44 m/s²

Answer 1

The acceleration of the race car is -4.4 m/s².

Step-by-step explanation:

To find the acceleration, we can use the formula:

Acceleration = (Change in velocity) / Time

In this case, the initial velocity is 44 m/s, the final velocity is 0 m/s, and the time is 10 seconds. So the change in velocity is 0 - 44 = -44 m/s. Plugging these values into the formula, we get:

Acceleration = (-44 m/s) / (10 s) = -4.4 m/s²