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Mathematics, 21.04.2021 19:00 maddiecrouch21

Each expression represents an object’s distance from the ground in meters as a function of time, t, in seconds. Object A: −5t2+25t+50
Object B: −5t2+50t+25
a. Which object was launched with the greatest vertical speed?
b. Which object was launched from the greatest height?
please help.

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