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Day 5

# Day 5 - Exam Next Tuesday 70-2690 6:00pm Exam will have 2...

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Exam Next Tuesday, 70-2690, 6:00pm Exam will have 2 parts: 50% common multiple choice ( 10 problems), 50% problems (2ish). w/formula sheet. Topics: units, conversions, and significant figures vectors (graphical addition, numerical addition, resolving magnitudes, etc...) uncertainties (statistical & graphical) simple kinematics (position diagrams, etc...) moderate 1-d kinematics problems (1 object, kinematics equations)

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Units and Conversions The position in meters of an object is given by x = a ( t ) . What are the units of a ? a) m b) m/s c) m · s d) m/ t e) m · t Approximately how many cubic inches are there in 1 m 3 ? (2.54 cm = 1 in) a) 39 b) 1600 c) 61,000 d) 4 How many significant figures are there in 0.0020? a) 1 b) 2 c) 3 d) 4 e) 5
Vectors Draw a vector a and b . Draw the resultant vector a + b and a - b . Given vectors a = 3ˆ x - y + 4ˆ z and b = - x + 2ˆ y + 4ˆ z , what is a + b ? a - b ? What is the angle between a and b ? What angle does a make with the x - axis?

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Uncertainties A student measures the speed of a car to be 60 ± 3 mph, driving for 0 . 30 ± 0 . 01 hours. What is the absolute uncertainty in the distance the car travels?
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Day 5 - Exam Next Tuesday 70-2690 6:00pm Exam will have 2...

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