Newtons Laws
State Newtons First Law
An object in motion or at rest will remain that way unless acted upon by another force
Define Momentum and Impulse
Momentum - Product of an objects mass & velocity
Impulse - Change in momentum
State the formula for work
W = F x d
What do like and unlike charges do
Like charges repel and unlike charges attract
Define velocity
The rate at which the position of an object changes
State Newtons 3rd Law
For every action, there is an equal an opposite reaction
What is the Formula for impulse
F t = m (triangle here)v
How is energy related to work
Energy is the ability to do work
How do objects acquire a charge
By gaining or losing electrons
HEYO free points
I couldn't think of a good question to put here
Kinetic Friction - Force that resists an object in motion
Static Friction - The force that resists a force applied to an object( It will remain at rest until static friction is overcome )
What are the two types of collisions and explain them
Elastic - collision in which both momentum and kinetic energy are conserved. Objects are not deformed(Billiard balls)
Inelastic - collision where only momentum is conserved( Car accident )
The force required to lift an object is ...
Equal to the objects weight
What are the two ways to charge an object and explain them
Induction - Charging an object without touching it
Conduction - Charging an object by touching it
Define uniform motion and accelerated motion
Uniform - When objects move with constant velocity
Accelerated - When there is a change in an objects speed and or direction
Which one of newtons laws is known as the law of inertia
Newtons First Law
Explain the relation of airbags during a car crash to impulse
The job of airbag is slow the person momentum down during the moment of the crash in order to reduce the force on the people in the car
State the two types of PE(potential energy)
Gravitation PE and Elastic
What is the value of one elementary charge( Proton and Electron )?
+1.60 x 10-19 C
-1.60 x 10-19 C
How many sig figs are in the number 5,300
4 sig figs
A 10kg box is being pulled across the floor with 40N of force. Calculate force due to friction and determine the coefficient of kinetic friction
Force due to friction is 40N
Coefficient of kinetic friction is 2.4525
A 1kg ball in .50 meters high. With what momentum does the ball hit the ground
9.81 kg m/s
A man is pulling a crate to the right with 20N of force. He pulls the crate 6 meters from its starting position. How much was done
120J of force
Determine the electrostatic force between two protons .50m apart
9.20576 x 10-28 N
What is the difference between accuracy and precision
Precision - how close measurements of the same item are to each other
Accuracy - how close a measurement is to the true or accepted value