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Physics Do Now Practice Questions

Review and practice significant figures, rounding, metric prefixes, and unit conversions with these physics questions. Perfect for test preparation!

teagan-blevins
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Physics Do Now Practice Questions

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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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