In physics, many important quantities-from the simple foundations of mechanics s
ID: 3278834 • Letter: I
Question
In physics, many important quantities-from the simple foundations of mechanics such as position and force to very foreign ideas such as electric current densities and magnetic fields-are vectors. Simply knowing what a vector is helps understanding, but to really use the ideas of physics and predict things, you need to be able to do calculations with those vectors. The simplest operation you might need to perform on vectors is to add them. vectors is then the vector that begins at the tail of A and ends at the head of B vector. (Figure 1) If instead of swimming against the current you swam directly across the river (by your reckoning) at a speed of 1.00 m/s from left to right, which figure correctly shows the velocity vector with which your friend on the shore would see you moving? Choose the correct figure. (Figure 2) The added vectors are shown in gray: the vector representing their sum is shown in black. A B C D This question will be shown after you complete previous question(s). This question will be shown after you complete previous question(s). This question will be shown after you complete previous question(s).Explanation / Answer
Option d is correct.
Rightward vector represents my velocity.
Downward vector represents river current.
Right-downward vector shows how my friend sees me.