Question

1. a helicopter’s speed increases from 25 m/s to 60 m/s in 5 seconds. what is the acceleration of this helicopter? add text here!

Explanation:

Step1: Recall acceleration formula

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

Step2: Identify values

Here, \( v_i = 25\space m/s \), \( v_f = 60\space m/s \), \( t = 5\space s \).

Step3: Substitute into formula

Substitute the values into the formula: \( a=\frac{60 - 25}{5} \).

Step4: Calculate numerator

First, calculate the numerator: \( 60 - 25 = 35 \).

Step5: Divide to find acceleration

Then, divide by time: \( a=\frac{35}{5}=7\space m/s^2 \).

Answer:

The acceleration of the helicopter is \( 7\space m/s^2 \).