The kinetic energy (KE) of a ball the moment it hits the ground when dropped from a height above the ground is exactly equal to the potential energy (PE) of the ball when it was released.

Which is true about this closed physical system?

A. it obeys the second law of thermodynamics
B. it obeys the first law of thermodynamics
C. it obeys the law of conservation of energy

Question

The kinetic energy (KE) of a ball the moment it hits the ground when dropped from a height above the ground is exactly equal to the potential energy (PE) of the ball when it was released. 

 

Which is true about this closed physical system?

A. it obeys the second law of thermodynamics
B. it obeys the first law of thermodynamics
C. it obeys the law of conservation of energy

anonymous · Answer

hello @yayah2001

anonymous · Answer

hii @Swordsman1305

anonymous · Answer

Ok.. so what can you say you know already? You need help with the entire question? or parts?

anonymous · Answer

ok well.. we know that its the same force dropped as when it hits. yes?

anonymous · Answer

law of conservation of energy!! crap, wrong question!

anonymous · Answer

lol.. ok

anonymous · Answer

so you dont need help?" Or what?