Determine the average net force exerted in the barrel
During a circus performance, a 71.2-kg human cannonball is shot out of a 16.8-m-long cannon. If the human cannonball spends 1.06 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.
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A rock is thrown vertically upward from ground level at time t = 0. At t = 1.8 s it passes the top of a tall tower, and 2.0 s later it reaches its maximum height. What is the height of the tower?
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The mark for water has risen 0.6 cm above the liquid-air interface. If the height of original water mark is 13.6 cm, determine the density of the liquid.
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