Solve the problem.
-On our moon, the acceleration of gravity is $1.6 \mathrm {~m} / \mathrm { sec } ^ { 2 }$. If a rock is dropped into a crevasse, how fast will it be going just before it hits bottom 45 seconds later?
A) $3240 \mathrm {~m} / \mathrm { sec }$
B) $- 72 \mathrm {~m} / \mathrm { sec }$
C) $- 36 \mathrm {~m} / \mathrm { sec }$
D) $72 \mathrm {~m} / \mathrm { sec }$

Question

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The Answer of Solve the problem.
-On our moon, the acceleration of gravity is $1.6 \mathrm {~m} / \mathrm { sec } ^ { 2 }$. If a rock is dropped into a crevasse, how fast will it be going just before it hits bottom 45 seconds later?
A) $3240 \mathrm {~m} / \mathrm { sec }$
B) $- 72 \mathrm {~m} / \mathrm { sec }$
C) $- 36 \mathrm {~m} / \mathrm { sec }$
D) $72 \mathrm {~m} / \mathrm { sec }$

Solve the Problem 1.6 m/sec21.6 \mathrm {~m} / \mathrm { sec } ^ { 2 }1.6 m/sec2

Solve the Problem $1.6 \mathrm {~m} / \mathrm { sec } ^ { 2 }$