Acceleration

• What is acceleration defined as?

  Rate of change in velocity
• How is acceleration measured?

  In meters per second squared
• What does the delta sign (Δ) represent?

  Change
• How can change in velocity (Δv) be expressed?

  As v minus u
• If a car accelerates from 15 m/s to 35 m/s in 5 seconds, what is the change in velocity?

  20 m/s
• What is the formula for calculating acceleration?

  Acceleration = Δv / time
• Why can acceleration be negative?

  It indicates the object is slowing down
• What does average acceleration refer to?

  Acceleration over a specific time period
• What is uniform or constant acceleration?

  Acceleration that remains the same over time
• What additional variable is included in the second acceleration equation?

  Distance
• When should you use the second acceleration equation?

  When given the unit of distance
• What happens if an object starts from stationary?

  Its initial velocity (u) is zero
• If a ball is dropped and its final velocity is 7 m/s, what is its initial velocity?

  0 m/s
• What is the acceleration due to gravity for dropped objects?

  9.8 m/s²
• What is the height from which the ball is dropped if its final velocity is 7 m/s?

  2.5 m
• What assumption is made about the ball when calculating its height?

  It started from stationary