# CFI Physics Exam #1

 The flashcards below were created by user BrettIRB on FreezingBlue Flashcards. A physicist records the length of apendulum as 152.4cm +/- 0.1 cm. The designation of +/- is most properly called that _________. Margin of error Waht is the fundamental SI until of mass? Kilogram How would you write 39,000,000 in scientfic notation? 9.3 x 107 True/False: 5 Liters - 2 square inches is a possible process. False: They are different dimensions Which is a derived unit: m, s, m/s, or K m/s (meters per second) What does the prefix nano- mean? 10-9 How many signifigant digits are in the number 6.02200? 6 Two quantities cannont be compared, added, or subtracted unless they have teh same ___________. Dimensionality All objects in __________ have the same accelration. free fall Which of the following is a vector quanity: Velocity, Mass, Time, or Speed Velocity What equation is used to calculate centripetal acceleration? ac=v2/r What will happen if arrow A is shot horizontally at the exact moment that an identical arrow B is dropped from the same height? Arrows A and B will hit the ground at the same time If you are driving a car at a constant speed around a circular track, are you accelerating? Yes, because my direction is continually changing AuthorBrettIRB ID69845 Card SetCFI Physics Exam #1 DescriptionCFI Physics Exam #1 Updated2011-03-01T14:01:57Z Show Answers