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A hoop and a solid sphere are "raceddown a 45 degrees incline from a height of...

A hoop and a solid sphere are "raceddown a 45 degrees incline from a height of 1.5 m. a) Which one will get to the bottom of the incline first? b) How much time will pass between the arrival of the first object at the bottom of the ramp and the arrival of the second obiect?
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