Answer to Question #250803 in Physics for grey tyrant

Question

2. Your phone slips from your pocket as you’re going up a ladder of a high building. Your phone falls for 2.7 seconds before you heart it hit the cement below.

a. At what height did the phone fall from? (Hint: Your phone’s initial velocity is zero.)

b. What was the velocity of your phone when it hit the cement?

Answer 1

a)

$$h=0.5(9.8)(2.7)^2=35.7\ m$$

b)

$$v=(9.8)(2.7)=26.5\frac{m}{s}$$