07:59Unit vector notation | Vectors and spaces | Linear Algebra | Khan AcademyKhan Academy674views1rank
Multiple ChoiceA = (4.0 m)i + (3.0 m)j and B = (−13.0 m)i + (7.0 m)j. You add them together to produce another vector C.(a) Express this new vector C in unit-vector notation.(b) What are the magnitude and direction of C?914views10rank3comments
Textbook QuestionIn each case, find the x- and y- components of vector A: (b) A = 11.2j - 9.91i1367views
Textbook QuestionGiven two vectors A = -2i + 3j + 4k and B = 3.00î+1.00ĵ − 3.00k (a) find the magnitude of each vector;1114views
Textbook QuestionYou are given two vectors A = -3i + 6j and B = 7i + 2j. Let Counterclockwise angles be positive (a) What angle does A make with the +x-axis?857views
Textbook QuestionGiven two vectors A = 4i + 7j and B = 5i - 2j, (a) find the magnitude of each vector;1214views
Textbook QuestionTrevon drives with velocity v₁ = (55î ─ 10ĵ) mph for 1.0 h, then v₂ = (20î ＋ 50ĵ) mph for 2.0 h. What is Trevon's displacement? Write your answer in component form using unit vectors.705views
Textbook QuestionWhat are the x- and y-components of vector shown in FIGURE EX3.3 in terms of the angle and the magnitude E? 545views
Textbook QuestionA cannonball leaves the barrel with velocity v = (75î ＋ 45ĵ). At what angle is the barrel tilted above horizontal?654views
Textbook QuestionThe position of a particle as a function of time is given by 𝓇 = ( 5.0î ＋4.0ĵ )t² m where t is in seconds. c. What is the particle's speed at t = 0, 2, and 5 s?369views
Textbook QuestionThe position of a particle as a function of time is given by 𝓇 = ( 5.0î ＋4.0ĵ )t² m where t is in seconds. b. Find an expression for the particle's velocity v as a function of time.791views
Textbook QuestionThe position of a particle as a function of time is given by 𝓇 = ( 5.0î ＋4.0ĵ )t² m where t is in seconds. a. What is the particle's distance from the origin at t = 0, 2, and 5 s?350views
Textbook QuestionFind a vector that points in the same direction as the vector ( î ＋ ĵ ) and whose magnitude is 1.1271views
Open Question(II) Let V₁ (→ above V₁) = ― 6.0 î + 8.0 ĵ and V₂ (→ above V₂) = ― 4.5 î ― 5.0 ĵ. Determine the magnitude and direction of(c) V₁ (→ above V₁) + V₂ (→ above V₂), and174views
Textbook QuestionFIGURE EX3.19 shows vectors A and B. What is C = A + B? Write your answer in component form using unit vectors523views1rank
Textbook Question(II) Let V₁ (→ above V₁) = ― 6.0 î + 8.0 ĵ and V₂ (→ above V₂) = ― 4.5 î ― 5.0 ĵ. Determine the magnitude and direction of (c) V₁ (→ above V₁) + V₂ (→ above V₂), and173views
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