Two balls are thrown from the top of a building a distance H from the ground. One ball is thrown vertically up with initial velocity V, while the other is thrown vertically down with velocity V. a. How long does it take the ball thrown upward to get to its highest point?
b. How high does it rise?
c. What is the difference in the time of flights for the two balls?
(Let H = 3 m, V = 24 m/s)

Need in all of themmm only answer if you know plsssss

Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter

What are two different ways you could find the value of a? explain these methods.