- #1

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Is speed the same thing as velocity in this case? If not, what do I do? I assumed it was the same and went: Vi= 10; a=-9.8; d=50 goes into formula d=Vit + 1/2at^2. But something's wrong...

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- Thread starter ms. confused
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- #1

- 91

- 0

Is speed the same thing as velocity in this case? If not, what do I do? I assumed it was the same and went: Vi= 10; a=-9.8; d=50 goes into formula d=Vit + 1/2at^2. But something's wrong...

- #2

Tom Mattson

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The camera is moving **down** initially, so v_{i} has to be negative.

- #3

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I keep getting a negative root when I try to do the quadratic formula. WHY? Wait, I tried a different formula and now I get negative time which is impossible. Are you sure it's supposed to be -10m/s?

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- #4

Tom Mattson

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That's because d=y-y

- #5

HallsofIvy

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The equation for height of the camera is -4.9t

Solve -4.9t

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