Which one is more accurate

M1 = 1.0cm + - 0.1cm

M2 = 0.10cm + - 0.01cm

M3 = 0.100cm + - 0.001cm

A. M1

B. M2

C. M3

D. All have same accuracy

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The state of an object accelerating due to the force of gravity alone

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A car is moving with a velocity (3.0 m/s) € x ˆ + (1.0 m/s) € y ˆ and 3.0 seconds later its velocity is (6.0 m/s) € x ˆ - (3.0 m/s) € y ˆ. What is the direction of the average acceleration of the car?

When water vapor condenses on the inside of a window, the window becomes

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