A football punter wants to kick the ball so that it is in the air for 4.5 s and lands 50 m from where it was kicked. Assume that the ball leaves 1.0 m above the ground.
a. At what angle should the ball be kicked?
Express your answer using two significant figures.
b. With what initial speed should the ball be kicked?
Express your answer to two significant figures and include the appropriate units.
Answers: 1
Physics, 22.06.2019 18:10, coryowens44
Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)
Answers: 1
Physics, 23.06.2019 05:00, nsuleban9524
How long will it take a car traveling of a constant speed of 45m/s to cover the distance of a 2.5km?
Answers: 1
A football punter wants to kick the ball so that it is in the air for 4.5 s and lands 50 m from wher...
Mathematics, 17.02.2021 23:40
French, 17.02.2021 23:40
Biology, 17.02.2021 23:40
History, 17.02.2021 23:40
Mathematics, 17.02.2021 23:40
Mathematics, 17.02.2021 23:40