Question

question 3 of 25 a car came to a stop from a speed of 35 m/s in a time of 8.1 seconds. what was the acceleration of the car? a -9.80 m/s² b -10.2 m/s² c -4.32 m/s² d -5.11 m/s²

Explanation:

Step1: Identify known values

Initial velocity \( v_i = 35 \, \text{m/s} \), final velocity \( v_f = 0 \, \text{m/s} \), time \( t = 8.1 \, \text{s} \)

Step2: Use acceleration formula

\( a = \frac{v_f - v_i}{t} = \frac{0 - 35}{8.1} \approx -4.32 \, \text{m/s}^2 \)

Answer:

C. -4.32 m/s²