Which of the following is not true about vector operation...

Which of the following is not true about vector operation? Group of answer choices When you multiply a vector with a positive scalar that is different from 1, its magnitude changes. When you multiply a vector with a negative number different from -1, both the magnitude and direction of the vector will change. When adding two vectors together it is important to account for both the magnitude and direction of the vectors. When subtracting two or more vectors, it is not necessary to account for the direction of the vectors.

Transcript

00:01 Hello student in this question firstly we are given a is greater than b a is greater than b and a a bar minus b bar is equals to a minus b so the answer will be when a bar and b bar vector in opposite direction when and b bar vector in opposite direction and b bar vector in opposite direction and b bar vector in opposite direction direction in opposite direction.

00:45 Next when a and b are in perpendicular then when a and b are in perpendicular then then resultant vector of the two vector is of the two vector is r is equal to root of a square plus b square but but for scalar for scalar for scalar sum of two scalar is some of two scalar is sum of two scalar is some of two scalar is sum of 2 scalar is s is equals to a plus b the third statement a scalar is scalar is scalar is dimension less number dimension dimension less number less number while vector is number vector are numbers that have dimension vector have dimension have dimension so this is a true statement this is a true next that is a scalar must always be positive scalar must be positive but vector can be positive or negative vector can be positive positive or negative so this is a true statement.

03:16 Again this is a true statement.

03:20 Next, a scalar is specified with single number.

03:27 Scalar is specified with single number.

03:36 Single number while vector is specified using both magnitude and direction.

03:44 Vector is specified using both magnitude and direction.

03:49 And direction, magnitude and direction.

03:58 So this is a true statement.

04:01 Again, this is a true statement.

04:05 Next, the statement is scalar have both magnitude and direction.

04:13 Scalar have both magnitude and direction, magnitude and direction, while vector have only magnitude.

04:28 Vactor have only magnitude...