Question

A car drives 215 km east and then 45 km north. What is the magnitude of the car’s displacement? Round your answer to the nearest whole number.

Answer 1

You use the Theorem of Pythagoras:
Imagine the Car is driving: when it turns left to drive north This has to be an 90 degree angle:
^
---> |

But the displacement is Always the shortest Line between the start and the end and in This case it is a Line which creates a triangle.
In a triangle With a right angle you can use Pythagoras:
215^2+45^2=c^2
v=√(215^2+45^2)

Answer 2

Answer:

220

Explanation:e2020