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A toy spring loaded cannon is aimed 30 degrees above the horizontal. The spring constant is 101 N/m and the cannon ball has a mass of 65 grams. What is the speed of the cannon ball just before it hits the ground if the spring is initially compressed 0.25 m?
A. 0 m/s
B. 0.62 m/s
C. 0.31 m/s
D. 9.9 m/s
E. 20 m/s
If the same cannon described in problem 8 is aimed straight up, what is the maximum height the projectile goes? (Assume the same 0.25 m initial compression).
A hydraulic jack is made with a small piston 1.2 cm in diameter that is used to move a large piston 6.1 cm in diameter. how heavy a load can he lift with the jack
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