Question

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!!!)

Answer 1

-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