which option is correct DLD UT ULEImal places in the most accurate of the quanti
ID: 1880488 • Letter: W
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which option is correct
DLD UT ULEImal places in the most accurate of the quantities 9) Which of the following has the greatest number of significant figures? Al 3.142 0) 03.14000.003142 5 D) 314.1 E)000.31404 10) How many significant figures are in 0.0037010? A) four D) five C) si E) eight QUESTIONS 11) THROUGH 17) ARE TRUE/FALSE 11) It is possible for the magnitude of displacement to be greater than the d stance traveled.F 12) It is possible to have constant speed, but still be acceterating. T 13) It is possible to have a zero acceleration, and stll be moving 14) A negative velocity, approaching zero, represents a negative acceleration 15) Free fall s the motion of an object subject only to the influence of gravity. T 16) An object thrown downward does not experience free fall.F 17) An object thrown upward experiences free fall.T 18) All of the following are vectors, except A) velocity B) acceleration. C) force. D mass. E) displacement. 19) The slope of a line connecting two points on a velocity versus time graph gives A) average velocity B) average acceleration C) instantaneous velocity D) instantaneous acceleration. E) none of the given answers 20) The slope of a tangent line at a given time value on a velocity versus time graph gives B) instantaneous acceleration. C) instantaneous velocity D) average acceleration E) none of the given answers. 21) A new car manufacturer advertises that their car can go "from zero to sixty in 8s." This is a description of A) instantaneous speed. 8) average acceleration. average speed E) none of the given answers. 22) Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled. A) The displacement is always equal to the distance traveled. B) The displacement can be either greater than, smaller than, or equal to the distance traveled. C) The displacement is either greater than or equal to the distance traveled. D The displacement is either less than or equal to the distance traveled. FIGURE 2-1 b) X c) 23) Which graph in Fig. 2-1 represents an object at rest? A)graph a B)graph b C) graph c D) graph d E) both graphs a and dExplanation / Answer
There are three rules on determining how many significant figures are in a number:
1. Non-zero digits are always significant.
2. Any zeros between two significant digits are significant.
3. A final zero or trailing zeros in the decimal portion only are significant.
according to the given above rules
9. option D having the 6 significant digits
10.optin D having the 7 significant digits
11. Displacement is always less than or equals to the distance. it can never be greater than zero hence given statement is false statement.
12. acceleration is nothing but the time rate of change of velocity. if velocity is constant then the acceleration becomes zero.Hence given statement is false.
13. statement is True. even if acceleraiton becomes zero then body still be moving with constant velocity.
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