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Tag Archives: Physics

Cannonball

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A small cannonball weighing 5-kg is launched vertically in the air with an initial kinetic energy of 500 joules. How high will the cannonball travel above the launch point?

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One Strong Minion

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A force of 1 minion can cause 1 gram to accelerate at 1 cm/s2. How many newtons are equivalent to 1 minion?

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String Cheese Theory

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A hollow rubber ball, whose volume is 3 x 10-3m3 and has a mass of 1.0 kg) is held by a 1-meter-long string attached to the bottom of a large container of water. What is the tension in the string?

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Horse Race

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A horse accelerates uniformly from 0 to 20 mi/h in 2 seconds. What is the acceleration?

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Shake and Bake

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A racecar travels in a circular path around the Daytona 500 track. The radius of the circular track is doubled and the speed of the car does not change. The required force to maintain the car’s motion is:

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Getting Torqued

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Water moves through a turbine in a dam, causing it to turn. The force of the water is 300 N, and the radius of the wheel is 20 m. What is the torque around the center of the wheel?

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Electric Potential

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Which of the following statements regarding electric current is true?

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Acceleration Expression

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Which expression gives the acceleration of a 1kg mass on a frictionless inclined plane at 30o to the horizon, given that g = 9.8 m/s2?

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Kinetic Energy of a Race Car

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What happens to the kinetic energy of a race car if its speed is tripled?

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400 Meter Dash

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An athlete runs around a 400 meter track in 60 seconds, starting and finishing at the same place. What is her speed and velocity in m/s?

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