Which of the following does not result in an increase in the potential energy of the object involved?

Question

A) air being pumped into a bicycle tire

B) water flowing down rapids

C) a weight being lifted off the ground

D) a roller coaster car moving uphill

E) a spring being stretched

Answer 1

B) water flowing down rapids does not result in increase of potential energy since altitude of the water decreases. Remember P.E =m*g*h.

Answer 2

A cuz it involves only pressure energy

only A is the answer........

although....u may get confused with the spring, but thats P.E too cuz it involves elastic potential energy

others involve P.E cuz there is change in height...

Answer 3

B is a decrease in PE, an increase in KE

.

Answer 4

B) water flowing down rapids

that results decreasing in the potential energy of the water

as PE(potential energy) = mass x gravity x distance (away from the source of gravity which is Earth in that case)

as soon as water is falling down (distance decreases) PE decrease (KE "Kinetic energy" increase)