5.6.3 Acceleration

• Acceleration is defined as the rate at which an object's velocity changes over time.
• Acceleration is a vector quantity.

  True
• What is the formula for acceleration?

  a = Δv / t
• Positive acceleration occurs when an object is speeding up in the direction of motion.
• A car accelerates from 10 m/s to 25 m/s in 5 seconds. What is its acceleration?

  3 m/s²
• Match the type of acceleration with its effect on velocity:

  Positive ↔️ Speeds up

  Negative ↔️ Slows down
• Negative acceleration is also known as deceleration.


  True
• What is the definition of velocity?

  Rate of change of position in a specific direction
• Order the key differences between speed and velocity:

  1️⃣ Speed measures the rate of change in position

  2️⃣ Velocity includes direction of motion

  3️⃣ Speed is a scalar quantity

  4️⃣ Velocity is a vector quantity
• A car accelerates from 10 m/s to 25 m/s in 5 seconds. Its acceleration is 3 m/s².
• What is the effect of negative acceleration on an object's velocity?

  Slows it down
• A car accelerates from 10 m/s to 25 m/s in 5 seconds. What is its acceleration?

  3 m/s²
• Velocity is a scalar quantity

  False
• The unit for acceleration is m/s²
• What is acceleration defined as?

  Change in velocity over time
• Acceleration is a vector quantity


  True
• Speed is a scalar quantity, while velocity is a vector
• Velocity includes the direction of motion, while speed does not


  True
• Velocity is a scalar quantity.

  False
• What is an example of velocity?

  60 km/h North
• Speed measures the rate of change in position without regard to direction.

  True
• Match the variable in the acceleration formula with its definition and units:

  a ↔️ Acceleration (m/s²)

  v_f ↔️ Final Velocity (m/s)

  v_i ↔️ Initial Velocity (m/s)

  t ↔️ Time (s)
• Positive acceleration always means an object is speeding up.

  True
• Negative acceleration, also known as deceleration, occurs when an object slows down.
• Match the type of acceleration with its effect on velocity and an example:

  Positive Acceleration ↔️ Speeding up (Car accelerating from 0 to 60 mph)

  Negative Acceleration ↔️ Slowing down (Car braking to a stop)
• If a 10 kg box is pushed with a force of 50 N, its acceleration is 5 m/s².
• In which application is acceleration used to create thrilling experiences?

  Roller Coasters
• Unlike speed, velocity is a vector quantity.
• What are the units for acceleration?

  m/s²
• Positive acceleration means an object is always speeding up.


  True
• The formula for acceleration is `a = (v_f - v_i) / t`.
• The unit for velocity is m/s
• What is the formula for acceleration?

  a = (v_f - v_i) / t
• Negative acceleration always means an object is slowing down


  True
• The formula for acceleration can also be written as a = Δv / t
• What is the effect of positive acceleration on velocity?

  Increases velocity
• What is the main difference between speed and velocity?

  Direction
• Speed is defined as the rate of change of position
• Velocity is the rate of change of position in a specific direction
• What is the formula for acceleration?

  $a =$$(v_{f} - v_{i}) / t$