Q1. A spherical Balloon is inflated at the rate of 144 pie cubic inches per minute (in^3/min). Find out how rapid is the radius of the balloon changing if the radius is 4 inches?
Q2. A projectile is launched upward vertically with an initial velocity of 20ft/sec from the top of 50 foot building?
a) prepare down an equation of H (t) which describes the height of the projectile after t seconds?
b) When will the projectile hit the ground?
c) When does the projectile reach its utmost height?
d) Find out the maximum height?