Mastering Physics Solutions Chapter 3 Vectors In Physics

Mastering Physics Solutions Chapter 3 Vectors In Physics

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Chapter 3 Vectors In Physics Q.1CQ

For the following quantities, indicate which is a scalar and which is a vector:
(a) the time it takes for you to run the 100-yard dash;
(b) your displacement after running the 100-yard dash;
(c) your average velocity while running;
(d) your average speed while running.

Solution:

(A) Scalar, since there is no direction.

(B) Vector, since displacement depends on the direction.

(C) Vector, since velocity is a vector quantity.

(D) Scalar, since speed is a scalar quantity.

Chapter 3 Vectors In Physics Q.1P

Suppose that the component of a certain vector is doubled,
(a) By what multiplicative factor docs the magnitude of the vector change?
(b) By what multiplicative factor does the direction angle of the vector change?

Solution: