Question

lake nettle is 400 kilometers wide. a yacht sailing east at a constant velocity took 2 hours to cross half the width of the lake. what was the yachts velocity? write your answer as a whole number. kilometers per hour to the east

Explanation:

Step1: Calculate the distance traveled

The lake is 400 kilometers wide. The yacht crossed half the width of the lake. So the distance \(d=\frac{400}{2}=200\) kilometers.

Step2: Use the speed formula

The formula for speed \(v=\frac{d}{t}\), where \(d\) is distance and \(t\) is time. Given \(t = 2\) hours and \(d=200\) kilometers. Then \(v=\frac{200}{2}\).

Answer:

100