Question

Jerry measures the time it took for a ball dropped from a balcony to hit the ground. His stopwatch reads 1.4 s. How high is the balcony?

a) 14 m
b) 7.7 m
c) 19 m
d) 6.9 m
e) 9.6 m

Answer 1

E because
Vo= 0m/s
A = 9.8m/s^2
T = 1.4s
D= ?
Using the formula d= 1/2at^2 (you can exclude the voT part since vo =0 plug and you get 9.6 m