A ball is thrown upward at time t=15t=15 s on planet Ubuntu, and its acceleration from time t=15t=15 s to t=23t=23 s is given by the function a(t)=4t−14 m/s2a(t)=4t−14 m/s2. Use 44 time intervals of equal length to overestimate, and then underestimate, the relative velocity of the rising ball from time t=15t=15 s to t=23t=23 s. (a) Overestimate