Question

A helicopter flies southeast with a ground speed of 230 km/h. If the windspeed is 25 km/h southeast, what is the air speed?A. 175 km/hB. 255 km/hC. 205 km/hD. 230 km/h

Answer 1

Given data

*The given ground speed of the helicopter is v_g = 230 km/h

*The given wind speed is v_w = 25 km/h

The formula for the air speed is given as

`v_a=v_g-v_w`

Substitute the known values in the above expression as

`\begin{gathered} v_a=(230)-(25) \\ =205\text{ km/h} \end{gathered}`

Hence, the air speed is v_a = 205 km/h. The correct option is (C)