Question

Why does a moving object come to a stop on a frictional surface?

a.The object’s kinetic energy is transformed into mainly heat energy.

b.The object’s potential energy is transformed into mainly kinetic energy.

c.The object loses all its energy in deformation.

d.The object’s kinetic energy is transformed into mainly potential energy.

Answer 1

you can start by thinking what happens when there is fricition between two objects, use some common sense and see if you can figure out what kind of energy is generated.
You can also try sliding things on a table and testing if they "slow down" (lose kinetic energy) !
have some fun!
:D