Help on a kinematic word problem?

Question

A ball is rolled up a constant slope with an initial velocity of 2.2 m/s. After 2.0s, the ball rolls down the slope with a velocity of 1.2m/s

It'd be great if the givens, unknowns, and equation were given. I'd also like an explanation for the process and what the answer is. Thanks in advance!

Answer 1

Acceleration,a=(v-u)/t

                         =(1.2-2.2)/2

                       =-0.5 m/s^2