danielmartinez91
26.02.2021 •
Physics
A baseball is launched at a 30 degree angle above the horizontal with an
initial velocity of 5 m/s. Which of the following angles will result in the same
horizontal range?
15 degrees
45 degrees
50 degrees
60 degrees
90 degrees
Solved
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Ответ:
h
Explanation:
nnnfnvkfnf kjnjfkjnffjf fkflfnf ff jfnnjv
Ответ:
Power = 49 W
Explanation:
power = work / time (J/t or watt)
Joule or J = kg*
/
watt or W = J/s
given:
mass = 2.0 kg
height = 15 m
g = 9.81 m/s2 (assumed)
t = 6 seconds
work = mass*g*h
work = 2.0*9.81*15 = 294.3 kg*
/
= 294.3 J
Power = 294.3 J / 6 seconds = 49.1 J/s = 49 W