What would happened to the bat if the bat and ball met while you held the bat without moving it? What would happened to the bat if it met the ball the second time? Use the concept of kinetic energy to explain the difference in what happened to the bat.

If steel is more dense that lake water, why can a boat float

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The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.