Understanding Physical Science

Mini-Quiz: Derivation of Displacement-Velocity Gravity Equations

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QUIZ

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What must be derived before finding the displacement-velocity relationship?
Velocity-time and displacement-time relationshipsCorrect. You understand gravity derivations. The exact value of acceleration due to gravitySorry, not correct. Try another button. The initial velocityGood try, but not right. Select another answer.
What is the displacement equation if the initial velocity is zero?
The equation becomes impossible to solveOops! Wrong answer. Re-read the question and try again. y = v2/2gThat is Correct. You are also good in mathematics. y = −vi2/2gSorry, not correct. Try another button.
How can there be a positive and negative velocity?
They mean the same thingGood try, but not right. Select another answer. It is an indication of before and after an object movesOops! Wrong answer. Re-read the question and try again. It is an indication of opposite directions of the velocityCorrect. You understand gravity derivations.

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