Forces By: Alyssa Zhao #530
By: Alyssa Zhao #530
Pushing parallel to the ground
Work=Net force x Displacement
Pushing not parallel to the ground
W=Fd cos θ
Action done on an object that displaces the object
Newton's Laws of Motion
The acceleration of an object is equal to the net force acting on it divided by the object's mass.
Acceleration= Net Force/Mass, or a=F/m
You can try to find the acceleration of the bottle rocket when launched by dividing the mass by the net force.
For every action, there is an equal and opposite reaction.
When the parachute on the bottle rocket opens from the air coming towards the rocket, the rocket will suddenly slow down due to the air that's under the parachute.
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Our bottle rocket won't move until the pressure escapes. The rocket is at rest until the pressure from the pumping pushes it up.
Potential Energy=mass x free fall x height
P.E. = mgh
Energy of Posistion
The energy an object possesses by virtue of its position in a field
(Gravitational, electromagnetic, etc.)
Kinetic Energy of an object=
1/2 mass of object x speed of object ^2
K.E. = 1/2 m v^2
Energy of Motion
The energy an object possesses by virtue of its motion
Sum of Kinetic Energy and Potential Energy associated with the motion and position of an object.