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?

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?

calculusxy · Answer

@DanJS

danjs · Answer

Did you learn the kinematic equations?

danjs · Answer

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

danjs · Answer

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

danjs · Answer

Find how long it has fallen t... us that in 

Final Velocity = a*t

danjs · Answer

Or, there is the already combined version

$$v _{f}^2 = v _{i}^2+2*g*\Delta y$$

danjs · Answer

just solve for final velocity, everything else is given

danjs · Answer

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