# Quiz2a - c) Both experience the same acceleration. 3. [2...

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Physics 53 Quiz 2a Fall 2007 Name ___________________________ Recit. Section _______ Circle the correct answer: 1. [3 points] A race car starting from a standstill can cover a flat, straight 500 m track in 10.0 s. What is the minimal value of the static friction coefficient that will keep the wheels from losing traction? ( Hint: Use g = 10 m/s 2 .) a) μ s = 0.500. b) μ s = 1.00. c) μ s = 2.00. 2. [2 points] A small car collides with a large truck. Which of the two vehicles experiences the greater acceleration? a) The car. b) The truck.
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Unformatted text preview: c) Both experience the same acceleration. 3. [2 points] Two tug-of-war opponents each pull with a force of 200 N on opposite ends of a rope. What is the tension in the rope? a) 100 N. b) 200 N. c) 400 N. 4. [3 points] A mass m resting on a frictionless plane inclined at an angle θ with respect to the horizontal is pulled with a force F pointing uphill parallel to the incline. How large is the minimal force needed to keep the mass from sliding down the plane? a) m g sin . b) m g cos c) m g tan...
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## This note was uploaded on 05/13/2010 for the course PHYSICS 53L taught by Professor Mueller during the Fall '07 term at Duke.

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