Question

type the correct answer in the box.
sandra is riding a bicycle at 10.0 meters/second. she slows down to 2.0 meters/second in 10 seconds. her acceleration is meters/second².

Explanation:

Step1: Recall acceleration formula

Acceleration \( a = \frac{v_f - v_i}{t} \), where \( v_f \) is final velocity, \( v_i \) is initial velocity, \( t \) is time.

Step2: Identify values

\( v_i = 10.0 \, \text{m/s} \), \( v_f = 2.0 \, \text{m/s} \), \( t = 10 \, \text{s} \).

Step3: Substitute into formula

\( a = \frac{2.0 - 10.0}{10} = \frac{-8.0}{10} = -0.8 \)

Answer:

-0.8