Question
Why does a girl skateboarding on a half-pipe not remain in motion forever?
a
her energy is destroyed by the friction of the skateboard and the concrete
b
her energy is used up
c
none of the above
d
her energy is transformed into thermal energy from friction
a
her energy is destroyed by the friction of the skateboard and the concrete
b
her energy is used up
c
none of the above
d
her energy is transformed into thermal energy from friction
Answers
GPT-4o mini
The correct answer is:
**d. her energy is transformed into thermal energy from friction.**
As the girl skates on the half-pipe, friction between the skateboard wheels and the surface, as well as air resistance, converts some of her kinetic energy and potential energy into thermal energy, which is why she does not remain in motion forever.
**d. her energy is transformed into thermal energy from friction.**
As the girl skates on the half-pipe, friction between the skateboard wheels and the surface, as well as air resistance, converts some of her kinetic energy and potential energy into thermal energy, which is why she does not remain in motion forever.