Motion

• What does a force acting on an object cause?

  Motion
• What are the quantities involved in motion?

  Velocity, displacement, and acceleration
• What does distance represent?

  How far an object moves
• How is displacement different from distance?

  Displacement includes direction; distance does not
• What type of quantity is speed?

  Scalar quantity
• What is velocity?

  Speed with direction
• Can an object have constant speed but changing velocity?

  Yes, if its direction changes
• What is acceleration?

  Rate of change of velocity
• What does positive acceleration indicate?

  Increase in speed
• What does negative acceleration indicate?

  Decrease in speed
• What is constant acceleration?

  Rate of change of velocity remains constant
• What is the equation for calculating distance using acceleration?

  $v^2 - u^2 =$$2as$
• What do motion graphs allow us to see?

  Changes in distance, velocity, and acceleration
• What do Distance-Time Graphs show?

  • How an object's distance changes with time
  • Curved line indicates changing speed
  • Horizontal line indicates stationary
  • Straight line with positive slope indicates constant speed
  • Steeper gradient indicates higher speed
  • Flat gradient indicates no movement
• What do Velocity-Time Graphs show?

  • Changes in an object's velocity over time
  • Curved line indicates changing acceleration
  • Horizontal line indicates constant velocity
  • Straight line with positive slope indicates accelerating
  • Straight line with negative slope indicates decelerating
• What is the formula for acceleration?

  Change in velocity over change in time
• How do you calculate distance or displacement from a graph?

  1. Divide the area into triangles/rectangles
  2. Calculate the area of each shape
  3. Sum the areas to find total distance
• What is terminal velocity?

  Constant velocity when forces are balanced
• What happens as an object accelerates due to gravity?

  Drag force increases until balanced
• What does it mean when the graph levels off?

  Acceleration becomes zero
• What does the initial part of the graph show?

  Increasing velocity
• What does terminal velocity indicate on a graph?

  Constant velocity with no acceleration
• What are the equations of motion for a body moving up and down?

  1. $s =$$\frac{(v + u)}{2} \times t$
  2. $v =$$u^2 +$$2gs$
  3. $v =$$u +$$at$
  4. $v =$$u +$$gt$
  5. $s =$$ut +$$\frac{1}{2}at^2$
  6. $s =$$ut +$$\frac{1}{2}gt^2$
• What does the equation $s =$$\frac{(v + u)}{2} \times t$ represent?


  Distance traveled by an object
• What does the equation $v =$$u^2 +$$2gs$ represent?


  Final velocity in terms of initial velocity
• What does the equation $v =$$u +$$at$ represent?


  Final velocity after time t
• What does the equation $s =$$ut +$$\frac{1}{2}at^2$ represent?


  Distance traveled under constant acceleration
• What does the equation $s =$$ut +$$\frac{1}{2}gt^2$ represent?


  Distance traveled under gravity