kinematics

• what is distance and its quantity

  how far something travels, scalar
• what is displacement and its quantity

  how far something is from its starting position along with its direction, vector
• what is speed and its quantity

  the distance it travels every second, scalar
• what is velocity and its quantity 


  the rate of change of position, vector
• what is instantaneous speed or velocity

  the speed or velocity of an object at any given point in time
• how do you calculate instantaneous speed or velocity with a displacement-time graph

  draw a tangent
• what is acceleration and its quantity

  the rate of change of velocity, vector
• how do you calculate average acceleration

  change in velocity / time
• what does a curved line on a velocity-time graph mean

  acceleration
• what does 'start from rest' mean in SUVAT equations

  u = 0 and t = 0
• what graphs are used to represent motion

  displacement-time

  acceleration-time

  velocity-time
• what are the characteristics of a displacement-time graph

  diagram

  A) constant velocity

  B)

  C) velocity is increasing at a constant rate

  D)

  E) velocity and acceleration increasing at a constant rate

  F)

  
• what are the characteristics of a velcoity-time graph

  area under the graph = change in displacement

  A) constant velocity

  B) uniformed acceleration

  C) non-uniform acceleration

  
• what are the characteristics of an acceleration-time graph

  area under the graph = change in velocity

  A) constant velocity

  B) constant acceleration

  C) increasing acceleration

  
• how would bouncing a ball look on motion graphs

  diagram

  A) velocity

  B) time

  C) acceleration

  D) time

  E) acceleration due to gravity

  
• what is a projectile

  a particle moving freely, under gravity, in a two dimensional plane
• what are the key parts in projectile motion

  the acceleration due to gravity is constant and downward throughout the motion

  the horizontal velocity is constant and in the direction of the object throughout the motion

  the vertical velocity, changes in magnitude and direction throughout the motion
• what does maximum height attained mean in projectile motion

  when the projectile is momentarily at rest
• what does time of flight mean in projectile motion

  the time the projectile is in the air for
• what does range mean in projectile motion

  the horizontal distance travelled by the projectile
• what is fluid resistance

  the effects of gases and liquids on the motion of a body
• what is an example of drag forces

  friction and air resistance
• what are components of drag forces

  they are always opposite in direction to the motion of the object

  they transfer energy from the kinetic store of the object to the thermal stores of the objects and the surroundings
• what is the lift force

  an upwards force on an object moving through a fluid
• what factors are affected by fluid resistance

  time of flight, horizontal velocity and acceleration
• what happens to a projectile when air resistance is applied

  the path steeper on the way down than it is up

  the flight time will also decrease as the projectile is in the air for a shorter period of time
• what happens to the drag force from fluid resistance when a body increases

  it increases in velocity which means the drag force also increases
• what is terminal velocity

  when the drag force is equal to the gravitational pull on the body causing it to fall at constant velocity
• terminal-velocity graph

  A) acceleration

  B) air resistance increases

  C) terminal velocity

  D) large upward force from parachute = deceleration

  E) slower terminal velocity