45
a girl gets on her skateboard and pushes off with her foot. as she moves across the gym floor, she moves slower and slower and eventually comes to a stop. why does she come to a stop?

a. because there are no forces acting on the skateboard.

b. because the force in the skateboard runs out.

c. because the force of friction is acting on the skateboard.

C. Because the force of friction is acting on the skateboard.

Explanation:

The wheels turn pretty freely on a skateboard but not forever. The friction involved in the wheel mechanism slows the skateboard to a stop.

Hope this Helps (-:

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.