CIE A Level Physics复习笔记3.1.7 Terminal Velocity
Terminal Velocity For a body in free fall, the only force acting is its weight and its acceleration g is only due to gravity. The drag force increases as the body accelerates This increase in veloc...
CIE A Level Physics复习笔记3.1.6 Drag Force & Air Resistance
Drag Forces Drag forces are forces acting the opposite direction to an object moving through a fluid (either gas or liquid) Examples of drag forces are friction and air resistance A key component o...
CIE A Level Physics复习笔记3.1.5 Force & Momentum
Force & Momentum Force is defined as the rate of change of momentum on a body Force is equal to the rate of change in momentum The change in momentum is defined as the final momentum minus th...
CIE A Level Physics复习笔记3.1.4 Linear Momentum
Linear Momentum Linear momentum (p) is defined as the product of mass and velocity Momentum is the product of mass and velocity Momentum is a vector quantity - it has both a magnitude and a directi...
CIE A Level Physics复习笔记3.1.3 Newton's Laws of Motion
Newton's Three Laws of Motion Newton’s First Law: A body will remain at rest or move with constant velocity unless acted on by a resultant force Worked Example If there are no external forces actin...
CIE A Level Physics复习笔记3.1.2 Force & Acceleration
Force & Acceleration As stated on the previous page, Newton's Second Law of Motion tells us that objects will accelerate if there is a resultant force acting upon them This acceleration will be...
CIE A Level Physics复习笔记3.1.1 Mass & Weight
What is Mass? Mass is the measure of the amount of matter in an object Consequently, this is the property of an object that resists change in motion The greater the mass of a body, the smaller the ...
CIE A Level Physics复习笔记2.1.9 Projectile Motion
Projectile Motion The trajectory of an object undergoing projectile motion consists of a vertical component and a horizontal component These need to be evaluated separately Some key terms to know, ...
CIE A Level Physics复习笔记2.1.8 Acceleration of Free Fall Experiment
Acceleration of Free Fall Experiment A common experiment to determine acceleration of a falling object which can be carried out in the lab Apparatus Metre rule, ball bearing, electromagnet, electro...
