The picture above represents the outcome of three dart players turns at shooting

Question

The picture above represents the outcome of three dart players turns at shooting darts. The letters represent a person each so you have Player A, Player B and Player C. Use the picture to answer question 11, 12 and 13. Which of the dart players is the most accurate? Player A Player B Player C None of the above Which of the dart players is the least accurate? Player A Player B Player C None of the above Which of the dart players is the least precise? Player A Player B Player C None of the above Use the component or analytical method to find the magnitude and direction of the resultant vector R of adding the following vector:

Explanation / Answer

Most accurate is the person hitting all the three arrows aiming the centre..

Most precise person is the one hitting all the three arrows at one same position..

11) A is the most accurate person becuase he has the hit aiming the centre

12) C is the least accurate person because his arrows are far from the centre

13) C is the least precise peson because his arrows are widely separated from eath others

14)Vector A : 10g 50 deg

Vector B : 20g 120 deg

Resultants of A....X--(6.42)...Y--(7.6)

Resultants of B....X--(-9.99)...Y--(17.32)

Addition of vectors is simply adding the resultsnts in the same direction.

Hence sum = X--(-3.57)...Y--(24.98)

Magnitude of the sum = ((X^2)+(Y^2))^1/2

=25.23

Angle of the sum = -(tan)^-1(A/B)

=(98.137)

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