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DO NOW

DO NOW. Hand in “You are the Moving Man” Change the date on the last blank square of “Do Now” sheet to Thursday 9.18 Answer the following Identify the number of significant digits and the decimal column with uncertainty for each of the following: 0.00809 kg, 12,030 m, 91.0 mA , 13 in 2

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DO NOW

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  1. DO NOW • Hand in “You are the Moving Man” • Change the date on the last blank square of “Do Now” sheet to Thursday 9.18 • Answer the following • Identify the number of significant digits and the decimal column with uncertainty for each of the following: 0.00809 kg, 12,030 m, 91.0 mA, 13 in2 • Round each of the following to the number of significant digits indicated in parentheses: 148.20964 m (2), 0.004829 kg (3) • Calculate the following and round correctly: 23.8 m / 2.1 s 230 gal + 152.387 gal

  2. Giga • X104 • X10-6 • X109 • x1012

  3. Metric prefix meaning times 10-6 • Milli (m) • Micro (m) • Centi (c) • Nano (n)

  4. Metric prefix meaning “thousands” • Milli • Centi • Mega • Kilo

  5. Metric prefix meaning x10-9 • Giga • Pico • Nano • centi

  6. Metric prefix meaning “million” • Mega • Kilo • Pico • Giga

  7. Micro (m) • x10-9 • x10-6 • x10+3 • x10+12

  8. 45.2 cm = _____ mm • 4.52 mm • 452 mm • 4,520 mm • 0.0452 mm

  9. 55.2 grams = _____ kg • 552 kg • 55,200 kg • 0.552 kg • 0.0552 kg

  10. 123,000 ms = ______ s • 123 s • 1.23 s • 0.123 s • 1.23x1011 s

  11. 25.45 g / 12 cm3 = 2.12083333g/cm3 should be rounded to • 2 g/cm3 • 2.1 g/cm3 • 2.12 g/cm3 • 2.121 g/cm3

  12. 71 m/s x 182.7 s = 12,971.7 m should be rounded to • 12,971.7 m • 12,972 m • 12,970 m • 13,000 m

  13. 157.35 m + 124.58 cm= • 281.93 m • 281.93 cm • 1585.96 m • 158.60 m

  14. 12,300 kg + 85 kg = 12,385 kg should be rounded to • 12,385 kg • 13,000 kg • 12,390 kg • 12,400 kg

  15. (8.0 x 1012 )/ (2.0 x 106) • 4.0 x 106 • 4.0 x 1018 • 16 x 102 • 4.0 x 102

  16. 6.00 x 106 + 4.0 x 104 = ? • 10 x 1010 • 6.5 x 105 • 4.06 x 104 • 6.04 x 106

  17. Quantity that has both magnitude and direction: • Scalar • Directrix • Pointer • Vector

  18. SI units of mass • Newtons • Kilograms • Pounds • Gallons

  19. The amount of space occupied by an object • Mass • Volume • Density • Weight

  20. Which is NOT a vector quanity? • Speed • Acceleration • Force • Velocity

  21. Which is NOT a base unit in the SI system? • Candela • Newton • Kilogram • Meter

  22. Precision is affected by_____ while accuracy is affected by ______. • Systematic errors, random errors • Incorrectly calibrated instruments, taking a large number of measurments • Random errors, systematic errors • None of the above

  23. The displacement of a person who walks 45 m east and then walks 30 m west is: • 75 m west • 75 m east • 15 m east • 1.5 m w

  24. Vector quantity describing how much the position of an object changes (and in what direction) • Distance • Velocity • Displacement • Acceleration

  25. A car that travels 6.0 km in 2 minutes has an average speed of: • 12 km/min • 3.0 m/s • 50 m/s • 30 m/s

  26. To find the displacement during a time interval you should determine the ________ on a position-time graph. • Area under the curve • Slope • The duration • The “rise”

  27. To find the velocity you should determine the ________ on a position-time graph. • Area under the curve • Slope • The duration • The “rise”

  28. The magnitude of 3.0 m North plus 4.0 m East is: • 7.0 m • 1.0 m • 5.0 m • 0.75 m

  29. Acceleration describes: • How fast something is moving • How fast something is moving and in what direction • How quickly the velocity is changing • How quickly the position is changing

  30. The slope of a velocity-time graph indicates the _____ of an object • Displacement • Speed • Acceleration • Distance

  31. Which of the following does NOT describe an object that is accelerating • A dropped ball that is speeding up • A baseball player slowing down as they slide into home. • A car going around a turn at constant speed. • A rocket traveling really fast.

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