Acceleration 2

• How is acceleration calculated?

  Change in velocity divided by time
• What equation is used for constant acceleration?

  Final velocity squared minus initial velocity squared
• What do you need to know about the acceleration equation for the exam?

  You are given this equation in the exam
• Why might the acceleration equation appear more on higher papers?

  It is considered trickier than other equations
• If a car accelerates from 8 m/s to 12 m/s at 2 m/s², what is the distance traveled?

  20 meters
• What is the initial velocity of the cyclist in the sample question?

  3 meters per second
• What is the final velocity of the cyclist after accelerating?

  5 meters per second
• What is the distance traveled by the cyclist?

  50 meters
• What is the acceleration of the cyclist calculated from the given data?

  0.16 meters per second squared
• What is the initial velocity of the train in the final question?

  20 meters per second
• What is the acceleration of the train?

  5 meters per second squared
• What is the distance the train travels?

  50 meters
• What is the final velocity of the train after acceleration?

  30 meters per second
• What is the acceleration of an object falling towards Earth?

  Approximately 9.8 meters per second squared
• What force acts against a skydiver as they fall?

  Air resistance
• What happens when air resistance balances the force of gravity?

  The object stops accelerating
• What is the term for the constant velocity reached by falling objects?

  Terminal velocity
• What does terminal velocity depend on?

  Shape of the object
• What is the fluid through which a skydiver falls?

  Air
• What is the effect of an object's shape on its terminal velocity?

  It can increase or decrease terminal velocity
• What are the key points about calculating distance using the acceleration equation?

  • Rearrange the equation as needed
  • Substitute known values accurately
  • Understand the relationship between variables
• What are the steps to calculate acceleration from given velocities and distance?

  1. Identify initial and final velocities
  2. Determine distance traveled
  3. Use the rearranged acceleration equation
• What are the implications of air resistance on falling objects?

  • Initially accelerates due to gravity
  • Eventually balances gravity
  • Reaches terminal velocity
• What factors influence terminal velocity in falling objects?

  • Shape of the object
  • Surface area
  • Density of the fluid