a toy rocket is launched from a 2.8 m high platform in such a way that is height, h (meters), after t seconds is given by the equation h= -4.9t^2+18.9t+2.8
how long will it take for the rocket to hit the ground?
t= 18.9/ 4.9
t= 3.85 sec
Please rate and commentbest of luck
round to the nearest hundredth
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