Exam1-Solutions-S14

# 05 m 31 1011 m 3 2 2 problem 5 a car initially

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Unformatted text preview: re). How many cubic meters of snow fell in that year? (1) 3.1 x 1011 (2) 6.3 x 1011 (3) 9.4 x 1011 (4) 3.1 x 1012 (5) 6.3 x 1012 PHY 2048 Spring 2014 – Acosta, Rinzler Exam 1 solutions The volume will be T times the semicircular area (the area enclosed by a circle divided by 2). Since the question asks for the volume in meters, the thickness given in centimeters and the radius given in kilometers should both be converted to meters before they are used in this expression: 2 1 π V = π R 2T = ( 2 × 10 6 m ) ( 0.05 m ) = 3.1 × 1011 m 3 2 2 Problem 5 A car, initially at rest, travels 40 m in time t = 4 s (or 5 s, or 6 s) along a straight line with constant acceleration. The acceleration of the car is: (1) 5.0 m/s2 (2) 3.2 m/s2 (3) 2.2 m/s2...
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