Question

a helicopters speed increases from 30 m/s to 40 m/s in 5 seconds. what is the acceleration of this helicopter?
m/s²

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

\( v_i = 30 \, \text{m/s} \), \( v_f = 40 \, \text{m/s} \), \( t = 5 \, \text{s} \).

Step3: Substitute into formula

\( a = \frac{40 - 30}{5} = \frac{10}{5} = 2 \).

Answer:

2