Answer:
58.56 J
Explanation:
Since the formula for gravitational potential energy is:
GE = m x g x h - where m = mass (kg), g = acceleration due to gravity (9.81 m/s²), h = height (m)
GE= 3 x 9.81 x 2
GE = 58.86 J
Hope this helps
Answer:
just find the answer in Google because I post it into Google
Explanation:
if two individual forces are of equal magnitude and opposite direction, then the force is said to be balanced. when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.
Answer:
563403.5 J
Explanation:
= mass of the skydiver = 64 kg
= Altitude of the airplane = 0.90 km = 900 m
= speed at the time of landing = 5.8 m/s
Gravitational potential energy of the skydiver at the airplane is given as
![U = mgh\\U = (64) (9.8) (900)\\U = 564480 J](https://tex.z-dn.net/?f=U%20%3D%20mgh%5C%5CU%20%3D%20%2864%29%20%289.8%29%20%28900%29%5C%5CU%20%3D%20564480%20J)
Kinetic energy of the skydiver at the time of landing is given as
![K = (0.5) m v^{2} = (0.5) (64) (5.8)^{2} = 1076.5 J](https://tex.z-dn.net/?f=K%20%3D%20%280.5%29%20m%20v%5E%7B2%7D%20%3D%20%280.5%29%20%2864%29%20%285.8%29%5E%7B2%7D%20%3D%201076.5%20J)
= Energy dissipated by air resistance
Energy dissipated by air resistance during the jump is given as
![E = U - K \\E = 564480 - 1076.5\\E = 563403.5 J](https://tex.z-dn.net/?f=E%20%3D%20U%20-%20K%20%5C%5CE%20%3D%20564480%20-%201076.5%5C%5CE%20%3D%20563403.5%20J)