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March 24th, 2017, 04:10 AM   #1
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Algebra Velocity Problem

If a bullet is shot straight up with an initial velocity of 48 feet per second, its height s after t seconds is given by the equation s = -16t^2+ 48t. Solve for the time it takes for the bullet to return to the ground. Show your work and explain the steps you used to solve.
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March 24th, 2017, 05:10 AM   #2
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set $s=0$ and solve for $t$
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March 24th, 2017, 07:43 AM   #3
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Set s=0 to find t, with condition t>0.
We can easy to see that t=3.
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