RP7

• 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?

  A toy car, string, pulley, and mass
• What provides the force acting on the toy car?

  The weight of the 100 gram mass
• What should you do when the toy car is released?

  Record the time it passes each marker
• Why is it better to record the experiment on a mobile phone?

  It allows for accurate time recording
• How are distance markers set up for the experiment?

  Chalk lines at equal intervals
• What happens to the mass on the end of the string during the experiment?

  It is decreased in each trial
• What is the significance of keeping the overall mass constant?

  It ensures valid results for acceleration
• According to Newton's second law, how is acceleration related to force?

  Acceleration is proportional to the force applied
• What does the weight of the mass on the string represent?

  The force acting on the toy car
• How does varying the mass of the toy car affect acceleration?

  Acceleration decreases as mass increases
• What is the mass used on the end of the string for constant force experiments?

  100 grams
• What does Newton's second law state about mass and acceleration?

  Acceleration is inversely proportional to mass
• Where can students find more questions on this practical?

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

  1. Set up equipment: toy car, string, pulley, mass.
  2. Mark distance intervals on the surface.
  3. Release the car and record times.
  4. Vary the mass on the string and repeat.
  5. Analyze how force and mass affect acceleration.
• What are the key principles of Newton's second law relevant to this experiment?

  • Acceleration is proportional to force.
  • Acceleration is inversely proportional to mass.