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4 years ago

9

Whoever answers first gets branliest Emily drops a stone from rest off a high bridge into a river. What is the speed of the ston

e after 5 seconds (neglect air resistance so g =-9.8m/s^2)? A. 5 B.-49 C.50 D.-19.6 E.-9.8

2 answers:

Nataliya [291]4 years ago

8 0

Answer: B: -49

Step-by-step explanation:

algol134 years ago

6 0

Answer:

I think it is -49

Step-by-step explanation:

hope this helps

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Vladimir79 [104]

Step one: Convert sentence to a expression

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3 years ago

The height h (in feet) of an object t seconds after it is dropped can be modeled by the quadratic equation h = -16t2 + h0, where

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$\bf h=-16t^2+255\implies h=-16t^2+0t+255
\\\\\\
~~~~~~~~~~~~\textit{quadratic formula}\\\\
\begin{array}{lcccl}
h=& -16 t^2& +0 t& +255\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array} 
\qquad \qquad 
h= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a}
\\\\\\
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3 years ago

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REY [17]

5 win : 3 lost

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3 years ago

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Natasha2012 [34]

Answer:

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Step-by-step explanation:

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