12-10

Today's Physic class focused mostly on the topic of adding and subtracting vectors.

To start off the day we were fed our third graded Daily Question in a row, it read:

A motorboat is travelling at 35 m/s in the 40 degree direction. The boat enters a current moving at 15 m/s in the 270 degree direction which provides it with an additional velocity. What is the boat's resultant velocity?

Doing this problem was as simple as making a scale (in our classes case it was mostly 1cm=5m/s), cross multiplying, and drawing the vectors. A nice quick review that would be a nice segway to our next topic, subtracting vectors.

Mr. Manning explained the simplicity of subracting vectors by saying that it was simply where we place the arrow on the vector. It was simply knowing that the vector has the same magnitude, just a different direction. Homework on th is topic was assigned with page 18.