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14 Cards in this Set

  • Front
  • Back
What is the acceleration due to gravity?
9.8 mls2
What is the mometum formula?
p=mv
momentum=(mass) (velocity)
What does the size of gravitational force between 2 object depend?
mass & distance
What parths are always curved?
Projectile
What is terminal velocity?
the highest velocity reached by a falling object
What is Newton's 2nd law?
It relates force, mass, and acceleration
What is the formula for Newton 2nd law?
formula F=ma
Force=mass x accleration
Why does a feather fall slower than a rock?
Air resistance (the upward force on a falling object)
What happens to the rock and feather when it falls without the presence of air (vacuum)?
The rock and the feather will fall at the SAME rate.
Why does an object moves in a circular pattern?
When an object moves in a circular pattern, it accelerates because of CENTRIPETAL FORCE.
As you move farther from the earth, what happens to your weight and mass?
weight - decreases
mass- stay the same
What is a force that causes things to fall?
gravity
What Newton 3rd Law?
Newton's 3rd Law says "to every action there is an equal and opposite reaction"
What is an example of action reaction forces?
a rockets gasess push down and the rocket get pushed UP.