The height (in meters) of a projectile shot vertically upward from a point 3 m above ground level with an initial velocity of 21.5 m/s is h = 3 + 21.5t 4.92 after t seconds. (a) Find the velocity (in m/s) after t seconds. v(t)= Find the velocity (in m/s) after 2 seconds and after 4 seconds. v(2) = v(4) = m/s m/s (b) What is the value (in m/s) of v(t) when the projectile reaches its maximum height? v(t)= m/s When (in s) does the projectile reach its maximum height? (Round your answer to two decimal places.) S (c) What is the maximum height (in m)? (Round your answer to two decimal places.) m (d) When (in s) does it hit the ground? (Round your answer to two decimal places.) S (e) With what velocity (in m/s) does it hit the ground? (Round your answer to two decimal places.) m/s