A softball flies into the air at 60° to the horizontal with a velocity of 50m/s. Calculate;
a). Maximum Height of the softball in its production.
b). Time taken by the softball to reach the maximum height.
c). Range attained by the softball in half the maximum height.
*please help. I need to confirm my answers. thanks

Athin electrical heater is inserted between a long circular rod and a concentric tube with inner and outer radii of 20 and 40 mm. the rod (a) has a thermal conductivity of ka = 0.15 w/(m*k), while the tube (b) has a thermal conductivity of kb = 0.8 w/(m*k) and its outer surface is subjected to convection with a fluid of temperature t= -15°c and heat transfer coefficient 60 w/(m2 *k). the thermal contact resistance between the cylinder surfaces and the heater is negligible. (a) determine the electrical power per unit length of the cylinders (w/m) that is required to maintain the outer surface of cylinder b at 15°c. (b) what is the temperature at the center of cylinder a?