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ACADEMIC PHYSICS LINEAR MOTION REVIEW SHEET Problems: 1. A ball initially at rest rolls down a hill with an acceleration of 3.3 m/s 2. (a) If it accelerates for 7.5 s, how far will it move? (b) How far would it have moved if it had started at 4.0 m rather than rest? 2. A plane, starting from rest at one end of a runway, undergoes a constant acceleration of 1.6 m/s2 for a distance of 1600 m before takeoff. (a) What is its speed upon takeoff? (b) What is the time required for takeoff? 3. A physics student throws a softball straight up into the air. Her friend has a stopwatch and determines that the ball was in the air for a total of 3.56 s. (a) With what speed was it thrown? (b) How high did it rise? 4. The velocity of a train is reduced uniformly from 10.6 m/s to 4.5 m/s while traveling a distance of 152 m. (a) Calculate the acceleration. (b) How much farther will it travel before coming to rest, assuming the same acceleration? 5. Atom Ant is moving with an initial velocity of 20 cm/s. He begins to accelerate and travels 2 m in 5 s. (a) How fast is he moving at the end of the 5 s? (b) What is his rate of acceleration? ANSWERS TO THE PROBLEMS: 1. 2. 3. 4. 5. (a) 92.8 m; (b) 122.8 m (a) 71.6 m/s; (b) 44.7 s (a) -17.4 m/s; (b) -15.5 m (a) -0.303 m/s2; (b) 33.4 m (a) 0.60 m/s; (b) 0.080 m/s2 D:\106748859.doc 1 3/6/2016kmh