One day there were 3 friends. They were named Pablo, Mia, and Bill. They were in the comfort of their home and where thinking about how everything moves.

Pablo stated that all things move from force. "So like the fire when we had to rub wood together," Mia said. "Exactly!" Pablo said, "Everything that moves requires force."

They 3 friends decided to go for a swim because they wanted to go see more forces. They decided to go to their friendly neighborhood pool to have a swim.

They got to the pool and Pablo threw in his toy and it didn't sink. "Why didn't the toy sink," Mia asked. "It floats because the toy is less dense than the water," Bill said. Mia was amazed by this but still was confused.

"If you divide mass and volume then you get the density and if it is below 1 then it floats," said Pablo. "But how do you get the density?" Mia asked. "You divide the objects mass by volume ans then you get the density," said Bill Mia was finally starting to get what density and mass where. "If gravity is greater than buoyancy then the object will sink, but if it it the other way around then they will float.

They decided to go home after they swam. Mia was curious again on how the car stops. Bill explained, "When the car stops friction acts against the wheels which causes the car to stop moving." When the car stops that is also an unbalanced force because friction is stronger than the force pushing the car.

Mia was curious about a lot of things now like why she gets pinned to the door when we turn. Bill explained, "We get pinned to the door because the door stops our motion of flying out in a straight line. This is called centripetal force." "Can you get centripetal force by dividing mass and weight?" Mia wondered. "You can't get it by doing that because weight is the measure of gravity pulling on you and mass is how much stuff is inside of you." Pablo explained

They finally got home and Mia started to get what the forces where. She even pointed out some in the house. She said when we rubbed logs together we get friction and when they dragged their feet on the ground that was friction.