Quiz

Vectors Pretest

DC PC 5 perguntas

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Perguntas do quiz (5)

1A vector is given by its components, \(A_{x} = 2.5\) and \(A_{y} = 7.5\). What angle does vector \(\mathbf{A}\) make with the positive x-axis?
1. A\(72^{0}\)
2. B\(18^{0}\)
3. C\(25^{0}\)
4. D\(50^{0}\)
2Which pair of vectors could produce a resultant of 35?
1. A15 and 15
2. B20 and 20
3. C30 and 70
4. D20 and 60
3As the angle between a given vector and the horizontal axis increases from \(0^{0}\) to\( 90^{0}\), the magnitude of the vertical component of this vector
1. Adecreases
2. Bincreases and then decreases
3. Cdecreases and then increases
4. Dincreases
4Vector \( \mathbf{A}\) has a magnitude of 10 units and makes and angle of \(30^{0}\) with the horizongal x-axis. Vector \(\mathbf{B}\) has a magnitude of 25 units and makes an angle of \(50^{0}\) with the negative x-axis. What is the magnitude of the resultant between these two vectors?
1. A20
2. B35
3. C15
4. D25
5Three forces act concurrently on a point P as shown below. Which vector represents the direction of the resultant force on point P?
1. A
2. B
3. C
4. D