Pergunta

Aquarterback throws an incomplete pass. The height of the football at time t is modeled by the equation h(t)=-16t^2+40 +7 Rounded to the nearest tenth, the solutions to the equation when h(t)=0 feet are -0.2 s and 27 s. Which solution can be eliminated and why? The solution -0.2s can be eliminated because time cannot be a negative value. The solution -0.2s can be eliminated because the pass was not thrown backward. The solution 2.7 s can be eliminated because the pass was thrown backward. The solution 2.7 s can be eliminated because a ball cannot be in the air for that long due to gravity.
Solução

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BrunoProfissional · Tutor por 6 anos
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The correct answer is: The solution $-0.2s$ can be eliminated because time cannot be a negative value.<br /><br />Explanation: In the context of this problem, time cannot be negative because it represents the duration from when the quarterback throws the ball until it reaches the ground. Negative time would imply that the ball was thrown before it was thrown, which is not physically meaningful. Therefore, the solution $-0.2s$ can be eliminated because time cannot be a negative value.
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