If the dot product of two vectors is equal to the product of their magnitudes, the angle between them is?
Correct answer: C. 0
- A. 180
- B. 90
- C. 0
- D. 270
Explanation
Let us say, the two vectors are A and B with magnitudes A and B. According to the situation, A.B = (A)(B)Also, we know that A.B = (A)(B)cosθ -----(2)As the value of A.B is known, we can find the value of the angle involved in here by substituting this value in (2) (A)(B) = (A)(B)cosθOr cosθ=1=0°
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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