Test_1_A - PHYS 2425 - Dr. Honan - Test 1 - A Possibly...

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PHYS 2425 - Dr. Honan - Test 1 - A Name _______________ Possibly Useful Information: 1000 liter = 1 m 3 1 ft = 0.3048 m 1 hr = 3600 s g = 9.80 m/s 2 Problem 1 Multiple Choice (4 points each) ______ [i] In the graph describe the velocity and acceleration at t = 0. (a) v < 0, a < 0 (b) v < 0, a = 0 (c) v < 0, a > 0 (d) v = 0, a < 0 (e) v = 0, a = 0 (f) v = 0, a > 0 (g) v > 0, a < 0 (h) v > 0, a = 0 (i) v > 0, a > 0 ______ [ii] When a ball is dropped out of a window it hits the ground at a speed of 12 m/s. If the ball were thrown horizontally out of the same window at a speed of 5 m/s, then what would be its speed when it hits the ground? (a) 0 m/s (b) 5 m/s (c) 7 m/s (d) 12 m/s (e) 13 m/s (f) 17 m/s (g) none of the above ______ [iii] A car decreases its speed while turning right. What is the direction of its acceleration? (a) left (b) right (c) forward (d) backward (e) left and forward (f) left and backward (g) right and forward (h) right and backward (i) cannot be determined ______ [iv] A 120 lb man stands in an elevator that moves upward and has an downward acceleration of g/4. What is the normal force of the floor on the man?
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Test_1_A - PHYS 2425 - Dr. Honan - Test 1 - A Possibly...

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