C.
Thanks me later, that's my answer.
Answer:
Final velocity (v) of an object equals initial velocity (u) of that object plus acceleration (a) of the object times the elapsed time (t) from u to v. Use standard gravity, a = 9.80665 m/s2, for equations involving the Earth's gravitational force as the acceleration rate of an object.
Explanation:
Gravity is all ways pulling down and the normal force acting on top of the object and for it to have to push or pull to the object
