Question

question 10 (1 point) a skater increases her velocity from 2.0 m/s to 10.0 m/s in 4.0 seconds. what is the skater’s acceleration?
○ a 4m/s/s
○ b 2.67m/s/s
○ c 3m/s/s
○ d 2m/s/s

Explanation:

Step1: Recall acceleration formula

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

Step2: Calculate velocity change

\( \Delta v = 10.0 \, \text{m/s} - 2.0 \, \text{m/s} = 8.0 \, \text{m/s} \)

Step3: Calculate acceleration

\( a = \frac{8.0 \, \text{m/s}}{4.0 \, \text{s}} = 2 \, \text{m/s}^2 \) (or \( 2 \, \text{m/s/s} \))

Answer:

d. 2m/s/s