Which of the following is the best name for no3?

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving