Q1 of 37 Page 19

The angle between A =i+ j and B =i – j is

For calculating angle between two vectors we will use the formula



Here therefore |A|= similarly for |B|= , and for dot product we will follow element-wise product of each term which will result into




Therefore ,and this is true when

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2

Which one of the following statements is true?

 3

Figure 4.1 shows the orientation of two vectors u and v in the XY plane.

If u = aî + bĵ and


V = pî +qĵ



Which of the following is correct?


 4

The component of a vector r along X-axis will have maximum value if

 5

The horizontal range of a projectile fired at an angle of 15° is 50 m. If it is fired with the same speed at an angle of 45°, its range will be