A ball is thrown from the edge of a cliff with an initial velocity of 40·m/s upward. Answer the following questions using + (upward) and - (downward) to indicate the direction of the velocity. Ignore air resistance and assume the ball does not hit the ground during the question. (a) Find the velocity of the ball 2 seconds after it is thrown. 1 m/s. (b) Find the velocity of the ball 11 seconds after it is thrown. 2 m/s. (c) How high does it rise above the edge of the cliff (from where it was thrown)? 3 m. *need help! show work if possible!