Mathematics

Mathematics, 10.11.2020 22:10, phowhim40

A ball is launched upward at 20 meters per second (m/s) from a 60 meter tall platform. The equation for the object’s height s at time t seconds after launch is s(t) = -4.9t^2+20t+60, where s is in meters. How long before the object hits the ground after launch?

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