Nature of forces
What is a force
A push or pull
Balanced forces are ----- in direction
opposite
Intertia is the tendency of ----- to resist a change in motion
matter
Acceleration due to gravity is-------
9.8m/sec/sec
What is weight?
weight is a measure of the pull of gravity
What can a force give
energy
True or False? Can a balanced force change motion?
No
what is newtons first law?
an object at rest stays at rest, and an object in motion stays in motion
when is terminal velocity reached?
pull of gravity is equal to the air resistence
Weight is a -----
force
What force opposes motion?
Friction
True or false? can unbalanced forces cause motion?
yes
what is newtons 2 law
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting upon it
what does newtons law of gravity state?
All objects pull on eachother
weight will change depending on what?
the pull of gravity
What can force do to a object?
Move it, stop it, or change direction.
If there is a rope, and John and Johnson are pulling on it on opposite sides, John pulling at 45 newtons and Johnson pulling with 30000 Newtons, which direction would the rope go?
Johnson
What is newtons 3 law
Newton's third law states that for every action (force) in nature, there is an equal and opposite reaction
the force of gravity
true or false? mass is constant
true
What are the three types of friction
Sliding, rolling, and fluid friction
If John went to the gym and started working out and declared a rematch, John pulling at 3000 and Johnson pulling at 3000, who would win
it would be a tie
What is the equation for newtons second law?
F=ma
an increase in distance decreases what?
the force of gravity
True or false mass and weight are the same thing