Answer to Question #133671 in Physics for Jessa Sabang

Question

During a tornado in 2008 the peachtree plaza westin hotel in downtown atlanta suffered damage. Suppose a piece of glass dropped near the top of the hotel falling 215 meters? Ignoring air resistance, how long would it take the piece of galss to hit the ground? Ignoring air resistance, what will the velocity of the piece of glass be when it strikes the ground?

Answer 1

The time it would take for the glass to reach the ground:

$$t=\sqrt{\frac{2h}{g}}=6.62\text{ s}.$$

Ignoring air resistance, the velocity near the ground will be

$$v=\sqrt{2gh}=64.9\text{ m/s}.$$