answer the following

l. 2. 4. Joseph measures his bathroom tiles to be 10 in by 8 in. Given the conversion factor. 1 in = 2.54 cm. what are the length and width in cm? 20.32 cm by 19,9 cm 25.5 cm by 20.32 cm 25.4 cm by 24.5 cm . 35.4 cm by 12.32 cm some The following steps of converting unite below are correct EXCEPT . km -> cm -) m B. hr -) min -) s C. kL -) L -) rnL 9. kg -> mg -> g > Accuracy tells us how close the measurement is to the true value of the quantity that was measured. Consider 3.7 mL to be the mu: value. which set of measurements below is accurate? A. 3.85 mL, 3.86 ml... 3.83 ml... 3.83 ml. B. 3.25 mL, 3.42 1711.. 3.35 ml... 3.20 1111. C. 3.70 mL, 3.72 mL, 3.7] ml... 3.73 mL 9. 3.10 ml... 3.24 ml... 3.34 ml... 3.12 mL The mass of an unknown substance is 1.79 g. which of the following sets of measurements below represents a value with both accuracy and precision? A. 1.78 g,1.BOg. 1.7651313 B. 1.95 g. 2.02 g, 1.96 g. 1.69 g C. 2.311;. 2.33 g. 2.79 g. 2.78 g 1). 1.79 g, 2.02 3.1.96 g. 2.01g April. a chemistry student forgot to calibrate her analytical balance before she measured the mass of her reactants in a chemistry experiment. She committed 78% error in her measurement. What type of measurement error did she commit? random error systematic error l either A of E . neither A nor B was? which of the following instances below demonstrates a random error? A. calibrating instrument improperly B. not setting an instrument to zero prior to its use C. not reading the meniscus at eye level for a volume measurement D. positioning slightly different each time weighing on a bathroom scale What do you call this statistical measurement of physical quantities which measures how for each value in the data set is from the mean? A. mean 3. median C. mode D. variance What do you think is the implication of having greater calculated variance in a data set? A. It means that the set of measurement is precise. B. It means that the set of measurement is accurate. C. It means that the set of measurement is not precise. I). It means that the set of measurement is not accurate. . Sealers are quanties that can be described by a single number which can be positive, negative, or zero. On the other hand. vectors are quantities which require the specication of magnitude and direction. Of the following quantities. which one is a vector? A. charge B. speed C. time D. velocity 10. When two vectors are added together, the vector sum would always be a vector also. What is the other term used for vector sum? A. product B. result C. resultant I). sum 1 1. To solve for a vector sumI like terms are added together. What must be the vector sum of those vectors 5 = (1.23 m)i' + (3.2 no], 5 = (2.4 m)i' + (2.1 m); A. (3.53 m)i+ (5.3 my\" 13. (3,33 m)i + (5.6 my\" C. (4.43 m)i + (-1.5 my\" D. (4.53 m)i + (5.4 m} 12. What could be a diagram construction of two vectors A and B added together through head to tail method? B. (Answer) C 8+y -? D. 13. The process of breaking a vector into its components is called A. vector addition B. vector resolution C. vector subtraction D. vector components 14. Based on Figure 1, what must be the x- and y- components of vector A if its magnitude is A = 25.0 m at an angle 0 = 43. A Ay A Figure 1. Vector Components Representation A. A, = 17.0m, Ay = 18.3 m B. Ax = 18.3 m, Ay = 17.0m C. Ay = 20.1m, Ay = 19.8 m D. Ax = 31.3m, Ay = 28.0m 15. With the given components of a vector, By = 20.5 m and By = 30.2 m measured from +x-axis towards +y-axis, what must be the magnitude and direction of a vector? A. B = 7.12 m, 34.20 NE B. B = 7.12 m, 55.8 NE C. B = 36.5 m, 34.2 NE D. B = 36.5 m, 55.80 NE 16. This quantity is a rate at which velocity changes over time. It is a vector, and thus has both magnitude and direction. A. acceleration B. position C. speed D. velocity 17. What quantity in the equation of uniform acceleration has the greatest impact on the acceleration of an object? A. displacement B. position C. time D. velocity 18. If given a chance to design a vehicle, what things would you consider to have the best acceleration? A. It should exert lesser force, and its mass must be lighter. B. It should exert lesser force, but its mass must be greater. C. It should exert greater force, and its mass must be lighter. D. It should exert greater force, and its mass must be greater also. 19. As seen in Figure 2, the object is obviously moving at constant positive velocity. This explains further that position time Figure 2. Position us. Time Graph (Velocity) A. it is accelerating. B. it has zero velocity. C. as the time increases, the distance also increases. D. as the time increases, the distance inversely decreases.20. Select which one of the pictures in Figure 3 shows an object moving at a constant negative acceleration (deceleration). A velocity velocity velocity velocity time time time time Figure 3. Velocity us. Time Graph (Acceleration) A. Figure A B. Figure B C. Figure C D. Figure B 21. The following are some of the interpretations that can be seen on different situations in velocity vs. time graph EXCEPT A. object's acceleration is zero B. object's acceleration is constant C. object's acceleration at Av = 0" , At = 5s D. object's acceleration at Av = 5" , At = 0s 22. What do you think will happen if the velocity vs. time graph shows a straight horizontal line over time? A. There is zero acceleration B. There is a decrease in acceleration C. There is an increase in acceleration D. There is no definite description of the acceleration 23. What quantity is measured in a position vs. time graph? A. acceleration B. displacement C. time D. velocity 24. What could you infer from a position vs. time graph showing a diagonally decreasing line? A. The velocity increases B. The velocity decreases C. The velocity stays the same D. There is no definite description of the velocity 25. When an object falls under the influence of gravity alone then it is in a state of A. free fall B. gravitational pull C. velocity changing motion D. non-uniform acceleration 26. A motorcycle slows down from a speed of 23.0 m/s to rest in 5.0 s. How far did it travel in that time? A. 4.6 m B. 11.5 m C. 57.5 m D. 115 m 27. In the second kinematic equation for uniform accelerated motion in vertical dimension, vy = vi + gt, how would you compare the final velocities of two objects started at different initial velocities? A. the object with lesser v; would have lesser v B. the object with lesser v; would have greater vy C. the object with greater v, would have lesser v, D. the object with greater v; would have greater v 28. A person tosses a coin upward into the air with an initial velocity of 20.0 m/s (neglecting air resistance). How high does it go? A. 20.4 m B. 31.9 m C. 43.2 m D. 50.1 m 29. How would you justify the idea of increasing the force to be exerted on an object for to accelerate positively? A. According to Newton's Second Law of Motion, force is dependent on acceleration. B. According to Newton's Second Law of Motion, acceleration is directly proportional to force. C. According to Newton's Second Law of Motion, acceleration is inversely proportional to force. D. According to Newton's Second Law of Motion, acceleration is greater when the mass of an object is greater also. 30. What steps of solution would you suggest if acceleration is the quantity that you are going to solve for given the force exerted and the mass in grams of an object? A. Use the Newton's Second Law of Motion equation without derivation. B. Use the Newton's Second Law of Motion equation and derive for the quantity acceleration. C. Convert the mass into kilogram unit, use the Newton's Second Law of Motion equation and derive for the quantity acceleration. D. Convert the mass into milligram unit, use the Newton's Second Law of Motion equation, and derive for the quantity acceleration