The height (in meters) of a projectile shot vertically upward from a point 3 m above ground level with an initial velocity of 25.5 m/s is h ='3 + 25.5t - 4.9t after t seconds. (a) Find the velocity (in m/s) after 2 seconds and after 4 seconds. v(2) = (No Response) m/s v(4) = (No Response) m/s (b) When does the projectile reach its maximum height? (Round your answer to two decimal places.) (No Response) S (c) What is the maximum height? (Round your answer to two decimal places.) (No Response) m (d) When does it hit the ground? (Round your answer to two decimal places.) (No Response) S (e) With what velocity (in m/s) does it hit the ground? (Round your answer to two decimal places.) (No Response) m/s Need Help? Watch It