A hockey puck sliding at 60.0m/s slows uniformly to 20.0m/s while travelling 800.0m.
a) Determine the acceleration
b) Determine the time it took

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.