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Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?
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When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative
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What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?
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