Physics Flashcards
What is the difference between scaler and vector quantities
scaler values have magnitude (negative vs positive) but no direction
Are distance, displacement, speed, velocity and acceleration scaler or vector
Scaler: distance, speed
Vector: displacement, velocity, acceleration
What is uniform motion
- a object moving at a constant rate of motion, in a straight line
- motion occurs when an object travels a certain distance at a period of time
- this motion is expressed by speed or velocity
What are the two types of graphs used for uniform motion
distance-time graphs and speed-time graphs
always linear
What is non-uniform motion
- the change in velocity of an object during a certain time interval is called acceleration
- acceleration represents non-uniform motion
what does the area under a velocity-time graph represent
displacement
What does the area under a speed-time graph represent
distance
What are Newton’s three laws
- an object will remain at rest or at motion unless an outside force acts on it
- the acceleration of an object is directly proportional to the amount of force applied to it and inversely proportional to the mass
- for every action, there is an equal and opposite reaction. The force applied to an object is equal and opposite to the force the object applies back
What does the area under a force-distance graph represent
amount of work done
What is the difference between kinetic and potential energy
Kinetic: energy due to motion
Potential: the potential that an object has to do work due to its position or condition. reffered to as having latent or stored energy
What is the first law of thermodynamics
energy can’t be created or destroyed, it can only be changed
What is gravitational energy
energy due to position or height
what is kinetic energy
energy from motion
What is light energy
a form of electromagnetic radiation
What is heat energy
kinetic energy of particles
