I Need Help With Part C E 1 (97.49 KiB) Viewed 62 times
I Need Help With Part C E 2 (92.51 KiB) Viewed 62 times
Part A Write the vector , in (Figure 1) in terms of the unit vectors î and Î. Express your answer in terms of the unit vectors i and Ĵ. Use the 'unit vector button to denote unit vectors in your answer. Express the coefficients in meters. A = 1.23i +3.38j m Submit Previous Answers ✓ Correct IDENTIFY: Use trigonometry to find the components of each vector. Use R = A + B +... and Ry = Ay+By+... to find the components of the vector sum. The equation Ā= Axi + Ayj expresses a vector in terms of its components. SET UP: Use the coordinates in the figure that accompanies the problem. EXECUTE: Ā= (3.60 m) cos 70.0°î + (3.60 m) sin 70.0°9 = (1.23 m)i + (3.38 m)ị Part B Write the vector B in the figure in terms of the unit vectors i and j. Express your answer in terms of the unit vectors i and ġ. Use the 'unit vector' button to denote unit vectors in your answer. Express the coefficients in meters. B = -2.07î - 1.2 m Submit Previous Answers Correct B=-(2.40 m) cos 30.0°î– (2.40 m) sin 30.0°)= (-2.08 m)i + (-1.20 m)ſ Part C Use unit vectors to express the vector C, where C = 3.00A - 4.00B. Pearson
Use unit vectors to express the vector C, where C = 3.00 A – 4.00B Express your answer in terms of the unit vectors i and j. Use the 'unit vector' button to denote unit vectors in your answer. Express the coefficients in mete ΤΠΙ ΑΣΦ ? ха хь Ő VxVx x x 1X x 101 x A CE 4.59i - 5.34j m Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part D Find the magnitude of C. Express your answer in meters. ΟΙ ΑΣΦ ? C = Submit Request Answer Part E Find the direction of c. Express your answers in degrees. ΟΙ ΑΣφ ? c = counterclockwise from +X-axis Submit Request Answer
Figure 1 of 1 A (3.60 m) 70.0° X 3000 0 B (2.40 m)
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