Question
Question: 2 kg body falls from infinity to the surface of earth what will be the kinetic energy of the body on...
2 kg body falls from infinity to the surface of earth what will be the kinetic energy of the body on reaching the surface of Earth ? (Assume escape velocity to be 104ms–1)–
A
108J
B
1016J
C
1020J
D
1024J
Answer
108J
Explanation
Solution
Kinetic energy = 21mve2 = 21.2.104.104J= 108J