3. An object is launched at 41 meters per second (m/s) from a tall platform. The equation for the

object's height h (in meter) at time t seconds after launch is

h(t) = -4.9t²+ 41t+39

a. What is the height above the ground when the object is launched?

b. How long before the object hits the ground after launch?/nc. What is the maximum height of the object?

d. When does the object reach its maximum height?