Gravity- is a force of attraction that exists between any two objects. There is a force of gravity between the sun and the Earth, between the Earth and us, and even between two marbles.
Friction- is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
The difference between mass and weight
is that mass is the amount of matter in a material, while weight is a measure of how the force of gravity acts upon that mass. Mass is the measure of the amount of matter in a body.
free fall- is defined as the motion of an object where gravity is the only force acting upon it.
SANA MAKATULONG.^_^
