Initial Velocity + Free Fall = Time

  • #1

Homework Statement



Equation for the time of a free fall with an initial velocity?

Homework Equations



√ (2 ⋅ h / a )

The Attempt at a Solution



Is it √ (2 ⋅ h / via )


Thanks for the help :)
 

Answers and Replies

  • #2
Andrew Mason
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Your guess is not correct. Your first equation is correct if the object is at rest (vi=0). If initial velocity is not 0 you have to factor in a vit term and work t out from the quadratic equation:

(1/2)gt2 + vit - h = 0

(where h is the distance fallen).

AM
 
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