Newton's 3rd law of motion and applications.
Acceleration
Speed
Distance
Velocity
Displacement
Rate
Kilograms
Speed
Vectors
Force
Inertia
Weight
Acceleration
Kilograms
Newtons
Kilograms
Pounds
Meters squared
The wall pushes on you with a force of 30 N.
The wall moves back 3 cm.
The wall cannot be forced.
You are pulled towards the wall.
The floor pushes back on you as a reaction to you pushing down on the floor.
You are pushed up by your own muscles.
The air pushes up on you.
You are pulled up by gravity.
Gravity only works at the surface of the earth.
The ground applies an upward force on you equal to the downward force of gravity.
The spinning of the earth pushes you up.
The gravity of the moon pulls up on you.
The car pushes back on you, gravity pulls you down, the ground pushes up on you, and friction on your shoes pushes forward on you.
Only gravity.
Your own muscles push you down.
No forces act on you.
There are no forces acting on you.
All forces acting on you are balanced by equal forces from the opposite direction.
Force is only acting on you in one direction.
Your acceleration must be greater than 0.