Req Pratical 7: Acceleration

• What is the main focus of the practical investigation described?

  Investigating acceleration of an object
• How does varying the force affect the acceleration of an object?

  It changes the acceleration of a constant mass
• What happens when varying the mass of an object while keeping the force constant?

  It affects the acceleration produced
• What equipment is used in the practical investigation?

  Toy car, string, pulley, mass, timer
• What provides the force acting on the toy car?

  The weight of the 100 gram mass
• How do you record the time accurately when the car moves rapidly?

  Record the experiment on a mobile phone
• Why do we draw chalk lines at equal intervals?

  To measure the distance the car travels
• What is the significance of keeping the overall mass of the object constant?

  It allows for accurate measurement of acceleration
• What does Newton's second law of motion state about acceleration?

  It is proportional to the force applied
• What is the relationship between acceleration and the mass on the string?

  Acceleration is proportional to the mass
• How do you investigate the effect of varying mass on acceleration with constant force?

  Attach mass to the toy car and record
• What happens to acceleration as the mass of the toy car increases?

  Acceleration decreases
• Where can students find questions related to this practical?

  In the revision workbook
• What are the steps to carry out the practical investigation?

  1. Set up the equipment: toy car, string, pulley, mass, timer.
  2. Draw chalk lines at equal intervals.
  3. Release the car and record the time it passes each marker.
  4. Repeat with varying masses on the string.
  5. Analyze the effect of force and mass on acceleration.
• What are the key concepts related to Newton's second law in this investigation?

  • Acceleration is proportional to force.
  • Acceleration is inversely proportional to mass.
  • Overall mass must remain constant for accurate results.