Another Planet

If i was to live in another planet then the gravity would be a lot less. The reason is because my planet would have a lot of basketball hoops so less gravity would help that. Most of us would be able to dunk which would be very fun.

Mu Friction

Theres friction on the ground for many reasons. One is that friction can be used to stop from sliding. Also to make people slide around if needed. But i think that a very thick carpet would have a very big friction. Also that the smoothest surface would have the least friction on my shoe.

speed and velocity

speed is the total distance traveled/total time taken and then velocity is the measure of the speed in a certain direction.