Name: ______________________ Class: _________________ Date: _________ ID: A <strong>AP</strong> <strong>physics</strong> C – <strong>Webreview</strong> (<strong>practice</strong> <strong>test</strong>) <strong>chapter</strong> 1 Multiple Choice Identify the choice that best completes the statement or answers the question. ____ ____ ____ ____ ____ ____ 1. In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the three quantities. What are the other two? a. length and force b. power and force c. length and time d. force and time e. power and time 2. The prefixes which are abbreviated p, n, and G represent which of the following? a. 10 -2 , 10 -6 , and 10 15 b. 10 -9 , 10 6 , and 10 10 c. 10 -12 , 10 -9 , and 10 9 d. 10 -15 , 10 -6 , and 10 12 e. 10 -10 , 10 -9 , and 10 6 3. One year is about ____ seconds while one day is exactly ____ seconds. a. 3.16 × 10 7 , 86 400 b. 5.26 × 10 5 , 86 400 c. 3.16 × 10 7 , 8 640 d. 1.04 × 10 6 , 36 000 e. 1.58 × 10 7 , 36 000 4. Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is acceleration, x is distance, and t is time) a. v/t 2 b. vx 2 c. v 2 /t d. at e. v/x 2 5. If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following? a. acceleration b. length c. time d. area e. volume 6. The speed of a boat is often given in knots. If a speed of 5 knots were expressed in the SI system of units, the units would be: a. m. b. s. c. m/s. d. kg/s. e. m 2 . 1