Question

A cyclist cycles 15 km west and then 15 km north. what is the magnitude of her displacement vector?

Answer 1

21.2 km

Step-by-step explanation:

You're basically solving for the hypotenuse of a right triangle with legs of 15 and 15. Use the pythagorean theorem:

d = displacement vector

d² = 15² + 15² = 450

d = √450 = 21.2 km