The work done by a body while covering a vertical height of 5m is 50 kJ. By how much amount has the energy of the body changed?
A. 50 kJ
B. -50 kJ
C. 25 kJ
D. 10 kJ
Answer:A
The work done by a body while covering a vertical height of 5m is 50 kJ. By how much amount has the energy of the body changed?
A. 50 kJ B. -50 kJ C. 25 kJ D. 10 kJ