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Question: A projectile is launched from a platform 35 feet high with an initial velocity of 20 feet per second. The height h of the projectile at t seconds after launch is given by h=-16t^2+20t+35feet.
How many seconds after launch does the projectile attain maximum height?
What is the maximum height?
A simple 2.32 m long pendulum oscillates. The acceleration of gravity is 9.8 m/s2. How many complete oscillations does this pendulum make in 5.58 min
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