Question

MEDAL!!!


A ball is dropped from a very tall building. Assume no air resistance.

What is the velocity of the ball when the distance travelled is 100m?

Answer 1

@DanJS

Answer 2

Did you learn the kinematic equations?

Answer 3

\[\Delta y = V _{0}*t + \frac{ 1 }{ 2 }*g*t^2\]

Answer 4

delta x is 100m, The original Velocity is Zero, and the acceleration of gravity g, is 9.8m/s^2

Answer 5

Find how long it has fallen t... us that in

Final Velocity = a*t

Answer 6

Or, there is the already combined version

\[v _{f}^2 = v _{i}^2+2*g*\Delta y\]

Answer 7

just solve for final velocity, everything else is given

Answer 8

\[v _{f}=\sqrt{2*g*\Delta y}\]