1. Physics for Scientists and Engineers, 6e Chapter 3 - Vectors

2. Which of the following are vector quantities? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.your age, speed, mass 2.acceleration, velocity

3. Scalars: your age, speed, mass. None of these quantities has a direction. Vectors: acceleration, velocity. For these quantities, the direction is necessary to specify the quantity completely.

4. The magnitudes of two vectors A and B are A = 12 units and B = 8 units. Which of the following pairs of numbers represents the largest and smallest possible values for the magnitude of the resultant vector R = A + B? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.14.4 units, 4 units 2.12 units, 8 units 3.20 units, 4 units 4.none of these answers

5. The resultant has its maximum magnitude A + B = 12 + 8 = 20 units when vector A is oriented in the same direction as vector B. The resultant vector has its minimum magnitude A – B = 12 – 8 = 4 units when vector A is oriented in the direction opposite vector B.

6. If vector B is added to vector A, under what condition does the resultant vector A + B have magnitude A + B? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.A and B are parallel and in the same direction. 2.A and B are parallel and in opposite directions. 3.A and B are perpendicular.

7. The magnitudes will add numerically only if the vectors are in the same direction.

8. Choose the correct response to make the sentence true: A component of a vector is _____ larger than the magnitude of the vector. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.always 2.never 3.sometimes

9. From the Pythagorean theorem, the magnitude of a vector is always larger than the absolute value of each component, unless there is only one nonzero component, in which case the magnitude of the vector is equal to the absolute value of that component.

10. If at least one component of a vector is a positive number, the vector cannot 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.have any component that is negative 2.be zero 3.have three dimensions

11. From the Pythagorean theorem, we see that the magnitude of a vector is nonzero if at least one component is nonzero.

12. If A + B = 0, the corresponding components of the two vectors A and B must be 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.equal 2.positive 3.negative 4.of opposite sign

13. Each set of components, for example, the two x components A x and B x, must add to zero, so the components must be of opposite sign.