Question

a person starts running from 3 m/s to 9 m/s in 2 seconds. calculate the person’s acceleration.
variables:
formula:
solve:

Explanation:

Step1: Identify variables

Initial velocity \( v_i = 3 \, \text{m/s} \), final velocity \( v_f = 9 \, \text{m/s} \), time \( t = 2 \, \text{s} \).

Step2: Recall acceleration formula

Acceleration \( a=\frac{v_f - v_i}{t} \).

Step3: Substitute values

\( a=\frac{9 - 3}{2}=\frac{6}{2}=3 \, \text{m/s}^2 \).

Answer:

The person's acceleration is \( 3 \, \text{m/s}^2 \).