# Physics-1 - 10kg that moves on a frictionless surface What...

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www.free-test-online.com Physics worksheet #1 Vectors, kinematics, dynamics, work and energy Question #1: What is the magnitude of the vector 3A - B in the figure above? (a) 3 (b) 4 (c) 5 (d) 2 (e) 6 Question #2: When a car's kinetic energy increases 9 times, what happens with its speed? (a) increases 9 times (b) increases 3 times (c) decreases 9 times (d) decreases 3 times (e) remains constant Question #3: An electric motor accelerates its rotation with a constant angular acceleration of 2 rad/s 2 until it reaches a frequency of f = 10/¶ Hz. If the motor starts from rest, how long does it take to reach frequency f? (a) 6s (b) 10s (c) ¶s (d) 12s (e) 15s

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www.free-test-online.com Question #4: Forces F1 and F2 in the figure above act on a block of mass m =

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Unformatted text preview: 10kg that moves on a frictionless surface. What is the acceleration of the block? (a) 1 m/s (b) 1.5 m/s (c) 2 m/s (d) 2.5 m/s (e) 3 m/s • Question #5: A force F acts on a body moving along the y axis. How much work does F y on the body from y = 2 to y = 9? (a) -2 J (b) 0 J (c) 8 J (d) -5 J (e) 2 J www.free-test-online.com • Question #6: A satellite circles planet X in an orbit having a radius of 10 8 m. If the radius of planet X is 10 7 m and the free fall acceleration on the surface of X is 20m/s 2 , what is the orbital period of the satellite? (a) 29.4 hours (b) 31.1 hours (c) 34.5 hours (d) 38.9 hours (e) 43.3 hours www.free-test-online.com Solutions: Question #1: c Question #2: b Question #3: b Question #4: d Question #5: d Question #6: d...
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Physics-1 - 10kg that moves on a frictionless surface What...

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