Who discovered Gravity?

Draw 3 examples of when friction is usefull
Gravity lifts an object away from the earth.
Air resistance is a force that acts upwards.
When a parachute jumps out of the plane, they fall to the earth really quickly.
When the parachute opens they slow down and descend to earth.



Why is there a lot of friction in these places?
What is the order of the Scientific method?
Procedure
Hypothesis
Gather materials
Question
Conclusion
Results
If force is applied in one direction, what force will act in the opposite direction?
Why did the object not move as far?