Homework Vectors 2

# Homework Vectors 2 - QIBT 1201BPS MATHS 1A HOMEWORK...

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QIBT 1201BPS MATHS 1A HOMEWORK Question 1 Two children are pushing a trolley around a supermarket The forces that they exert and the angles that their forces act at are shown on the diagram below (a) Resolve the 30 newton force into its i and j components (b) Also resolve the 20 newton force into its i and j components (c) Find the total force acting the trolley (d) Will the trolley move forward or at an angle? Question 2 (a) Draw a set of 3D vectors i , j , k in which the x axis points East, the y axis points North and the z axis points upwards . They must be a right handed set of vectors (a) Now draw in the vector a which starts at the origin, has length 2 and points straight upwards. Also draw in the vector b which has length 3 and which points due west. (b) Use the triangle rule in 3D to draw in the vector a + b (d) Write a and b in terms of i , j and k and calculate a + b as a 3D vector HOMEWORK 1

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Question 3 The two 3D vectors u and v are defined as u = 3 i + j + 2 k and u = -2 i + 3
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Homework Vectors 2 - QIBT 1201BPS MATHS 1A HOMEWORK...

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