uppose an object weights 49 pounds and has a force of 35 pounds acting on it 30 from the horizontal. What single orce is the resultant force acting on the body? 35-45. Resultant force = 35√3 X

Consider three vectors: What is the result of 2A. (B-3C)? What is the result of A A+B B + C. C? . A.A+B B+C . C = || A = (9.71) î+ (1.12) Ĵ B = (7.28) + (5.54); C = (-2.95) + (-14.7);

A block attached to a spring with a stiffness of 3.4 N/m. The relaxed length of the spring is 15 cm and its current length is 10 cm. What is the vector force that the spring exerts on the block? A. (-0.34, 0, 0) N                 B. (0.51, 0, 0) N                  C. (-0.51, 0, 0) N D. (0.17, 0, 0) N                  E. (-0.17, 0, 0) N

Evaluate each of the following. Assume î, ĵ, k are the unit vectors aligne with the x, y, and z axes, respectively. a. î j = d. (4î – j) · (3î + 5j – 10k) = b. k - k= c. k- î=