Solve the Problem $15 \mathrm {~meter}$ Cliff? (Use $\mathrm { g } = 9.8 \mathrm {~m} / \mathrm { sec } ^ { 2 }$

Multiple Choice

Solve the problem.
-At about what velocity do you enter the water if you jump from a $15 \mathrm {~meter}$ cliff? (Use $\mathrm { g } = 9.8 \mathrm {~m} / \mathrm { sec } ^ { 2 }$ .)

A) $17 \mathrm {~m} / \mathrm { sec }$
B) $2 \mathrm {~m} / \mathrm { sec }$
C) $- 8.5 \mathrm {~m} / \mathrm { sec }$
D) $- 17 \mathrm {~m} / \mathrm { sec }$