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A ball rolls off a cliff and falls for 4.5 s. What is the final vertical velocity of the ball? (Answer must be negative!!!)
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18 votes
18 votes
A ball rolls off a cliff and falls for 4.5 s. What is the final vertical velocity of the ball? (Answer must be negative!!!)

User Rjzii
by
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1 Answer

13 votes
13 votes

Answer:

-199 m/s

Step-by-step explanation:

Ignoring the horizontal velocity, the vertical velocity =

a *t a = -9.81 m/s^2

-9.81 ( 4.5^2) = - 199 m/s

User Jeffbyrnes
by
2.9k points
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