Investigating force,mass and acceleration

• What is the main focus of the BBC Bitesize section mentioned in the study material?

  Investigating force, mass, and acceleration
• What do resultant forces cause according to Newton's laws of motion?

  Resultant forces cause acceleration
• What is weight caused by?

  The gravitational effect of a planet attracting an object’s mass
• What is the aim of the experiment described in the study material?

  • To investigate the relationship between force, mass, and acceleration
  • By varying the masses added to trolleys
• What equipment is used to reduce friction in the investigation?

  A constant stream of air
• What is the known length of the interrupt card used in the experiment?

  10 cm
• What should be ensured about the air track before starting the experiment?

  The air track should be level
• What should be done after measuring the total mass of the glider, string, and weight stack?

  Attach the full weight stack to the end of the string
• How many weights are in the full weight stack used in the experiment?

  6 weights of 10g each
• What should be done after the glider is in position and the air blower is switched on?

  Remove one weight and attach it to the glider
• How should results be recorded in the experiment?

  • In a suitable table format
  • Including number of weights, force in N, and acceleration in m/s² for multiple runs
• What is the mean acceleration for 6 weights on the stack according to the results?

  1. 97 m/s²
• What is the force in N when there are 4 weights on the stack?

  0.4 N
• What does the analysis section suggest plotting on a graph?

  A scatter graph with force on the vertical axis and acceleration on the horizontal axis
• What does the evaluation state about the relationship between acceleration and force?

  Acceleration is directly proportional to the force applied to the object
• What should be checked to control the hazard of electrical faults with the air blower?

  Check mains cable and plug for damage
• What is a consequence of masses or the glider falling to the floor?

  Objects falling on feet can cause bruises or fractures
• What control measure should be taken to prevent injuries from falling objects?

  Use relatively small masses and step back after releasing the glider
• What are the key components of the experiment's method?

  • Set up air track and glider
  • Measure total mass
  • Attach weight stack
  • Record acceleration
  • Repeat with varying weights
• What is the purpose of the interrupt card in the experiment?

  To measure the time taken for the glider to pass through gates
• What should be done if there are anomalous points in the results?

  Evaluate the extent to which results show the expected relationship
• What does the extension suggest calculating from the graph?

  The gradient of the graph and compare it to the total mass
• What is the relationship between force and acceleration according to Newton's laws?

  Force is directly proportional to acceleration
• What is the significance of the line of best fit in the experiment's results?

  It shows the overall trend of the relationship between force and acceleration
• How can the results be used to understand the principles of motion?

  They demonstrate the relationship between force, mass, and acceleration