Vectors Flashcards
Two forces PQ and PR of magnitude 5.0 kilograms and 8.0 kilograms respectively, act at a point P. The direction of PQ is N 20° E, and the direction of PR is N 65° E. Approximate the magnitude and direction of the resultant PS.
12.10 kg, N 48° E
Find 2A if A = 2i - 4j - 5k.
4i - 8j -10k
The magnitude and direction of a constant force are given by a = 2i + 5j. Find the work done if the point of application of the force moves from the origin to the point P( 4, 1 ).
W = 13 ft lb
Find the angle between the vectors 3i + 2j + 5k and -4i + j + 6k.
θ = 63.53°
Find the value of b if the vectors A = 2i + bj + 2k and B = 3i + 2j + k are perpendicular.
b = -4
Find the area of a parallelogram with two sides identified by vectors from the origin to the points ( 3, 4 ) and ( 8, 0 ).
32
Find the value of c if the vectors A = 2i - j + ck and B = 4i - 2j + 6k are parallel.
3