In vector addition, the sum of two (or more) vectors will give a resultant vector. There are a number of sites that will help you with tutorials. A link to one can be found below.
The condition is the two vectors are perpendicular to each other.
Two vectors: no. Three vectors: yes.
Two vectors, no; three vectors yes.
You do vector addition.
Consider two vectors A and B Represented by directionel lines OM and ON respectivelynow add the two vectors by head to tail tail of vector addition now resolve it into rectangular components as shown in figure
a resultant vector
The condition is the two vectors are perpendicular to each other.
Two vectors: no. Three vectors: yes.
Two vectors: no. Three vectors: yes.
Yes.
Two vectors, no; three vectors yes.
If they are of equal magnitude and opposite direction.
You do vector addition.
Consider two vectors A and B Represented by directionel lines OM and ON respectivelynow add the two vectors by head to tail tail of vector addition now resolve it into rectangular components as shown in figure
No. The vector resultant of addition of vectors is the vector that would connect the tail of the first vector to the head of the last. For any set of vectors to add to the zero vector, the endpoint of the last vector added must be coincident with the start point of the first. Therefore for the sum of only two vectors to have a chance of being the zero vector, the second vector must be in a direction exactly opposite the first. So you can tell that the result of adding the two vectors could only can be zero vector if the two vectors were of two equal magnitude.
Two vectors with unequal magnitudes can't add to zero, but three or more can.
No.