Multiple Choice. Select the best option. You do not need to show your work. 4. I

Question

Multiple Choice. Select the best option. You do not need to show your work. 4. If the eastward component of vector is equal to the westward component of vector B and their northward components are equal. Which one of the following statements about these two vectors is correct? A) Vector is parallel to vector B a) Vectors 4 and H poin in opposite drectns C) Vector A is perpendicular to vector D) The magnitude of vector is equal to the magnitude of vector E) The magnitude of vector is twice the magnitude of vector Suppose that a car traveling to the west (the -x direction) begins to slow down as it a traffic light. Which statement concerning its acceleration in the x direction is correct? A) Both its acceleration and its velocity are positive. B) Both its acceleration and its velocity are negative. C) Its acceleration is positive but its velocity is negative D) Its acceleration is negative but its velocity is positive. 5. approaches If an object travels at a constant speed in a circular path, the acceleration of the object is A) larger in magnitude the smaller the radius of the circle. 8) in the same direction as the velocity of the object. C) smaller in magnitude the smaller the radius of the circle D) in the opposite direction of the velocity of the object 6. E) zero. 7. For the vectors shown in the figure, express vector in terms of vectors M and N CORE

Explanation / Answer

4. D) the magnitude of vector A is equal to vector B
5. C) the acceleration is positive but its velocity is negative
6. A) larger in magnitude ....
a=v2/R

7 S= M - N

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