- #1
denafoster
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A dart is shot straight up from 1.5m above ground level. The distance d,
in meters, the dart is above ground at time t, in seconds, is :
d(t) = -4.9t^2 + 20t + 1.5
For how many seconds is the dart in the air?
in meters, the dart is above ground at time t, in seconds, is :
d(t) = -4.9t^2 + 20t + 1.5
For how many seconds is the dart in the air?