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8 questions
A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?
In uniform circular motion, the magnitude of the _______________________of an object is constant but the __________ is continually changing.
speed, acceleration
speed, direction
acceleration, speed
acceleration, velocity
If an object is spinning around on a string and the string was suddenly cut, the object would move in a
curved path
straight line
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