A Golf Ball Thrown Directly Upwards from the Surface of the Moon

Multiple Choice

A golf ball thrown directly upwards from the surface of the moon with an initial velocity of 17.00 meters per second and will attain a height of $s(t) =-0.8 t^{2}+17.00 t$
meters in t seconds.Find a formula for the velocity of the golf ball at time t.

A) $v(t) =-1.6 t+17.00$
meters/sec
B) $v(t) =-0.8 t+8.50$
meters/sec
C) $v(t) =$
-1.36 meters/sec
D) $v(t) =-16 t^{2}+17.00$
meters/sec