Answer:
968 J
Explanation:
The computation of the kinetic energy is shown below:
Given that
mass m = 2 kg
height h = 20 m
velocity v = 24 m / s
Now
According to the law of conservation of energy ,
= K.E at top + P.E at top
= ( 1 ÷ 2) mv ^ 2 + mgh
= 576 + 392
= 968 J
Solar power many be a bit pricey, but it is more efficient than coal and it is better for the environment, coal could be made easily and is cheaper, but Solar power is efficient.
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The formula for acceleration is force divided by mass.
Force = 50 N
Mass = 200 kg
Acceleration = ???


~~
Acceleration = 0.25 m/s²
~~
Next time use, f = ma in a triangle,
F
M A
~~
I hope that helps you out!!
Any more questions, please feel free to ask me and I will gladly help you out!!
~Zoey
Answer:
92704.5 J
596.44737 N
Explanation:
m = Mass of person + bicycle = 75 kg
g = Acceleration due to gravity = 9.81 m/s²
h = Vertical height = 126 m
= Angle = 7.7°
d = Diameter = 0.388 m
Work done against gravity is given by

Work done is 92704.5 J
Force required is given by

The force is 596.44737 N
Either of them is. 1/(the other one). That's 'C' .