Mathematics, 19.03.2021 14:00 lizatapper3086

a toy rocket is fired into the air from a point 0 on the top of barn. The distance between the toy rocket and the ground at t seconds after thrown is given by s= -5t^2+10t+20. Find the time when the toy rocket hit the ground

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a toy rocket is fired into the air from a point 0 on the top of barn. The distance between the toy r...