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Q. An intergalactic rock star bangs his drum every 1.70s. A person on earth measures that the time between beats is 2.5s. How fast is the rock star moving relative to earth?

Q. An 80.00 kg bobsled is pushed along a horizontal surface by two athletes. After the bobsled is pushed a distance of 3m starting from rest, its speed is 5 m/s. Determine the magnitude of the net force on the bobsled.

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Category:- Physics
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