PLEASE HELP An object is dropped from a height of 25 meters. At what velocity will it hit the ground?
A. 7.0 meters/second
B. 11 meters/second
C. 22 meters/second
D. 49 meters/second
E. 70 meters/second

Question

PLEASE HELP An object is dropped from a height of 25 meters. At what velocity will it hit the ground?
A. 7.0 meters/second
B. 11 meters/second
C. 22 meters/second
D. 49 meters/second
E. 70 meters/second

anonymous · Answer

mgh = 1/2 * m v^2

25*9.8 = 1/2 v^2

v = ~22 meters/second

anonymous · Answer

Vf^2=Vi^2+2ad, where a=9.8, d=25m, and Vi=0m/s. Vf is the final velocity.