Question

A ball at rest starts rolling down a hill with a constant acceleration of 3.2 meters/second2. What is the final velocity of the ball after 6.0 seconds?

A.
–9.6 meters/second
B.
9.6 meters/second
C.
–19 meters/second
D.
19 meters/second

Answer 1

vf = v0 + at

vf is final velocity (which you’ll solve for)
v0 is initial velocity (the ball starts at rest, so 0)
a is acceleration
t is time

Plug in the appropriate quantities and solve for vf

Answer 2

k