Physical education

• What happens to all body parts during linear motion?

  They move the same distance and direction
• What are the forces acting on a body?

  Gravity, AR, friction, muscle force, weight
• What does Newton's 1st Law of Motion state about inertia?

  Inertia is resistance to change in motion
• How is inertia related to mass?

  The greater the mass, the greater the inertia
• What does the 1st Law of Motion imply about a body at rest?

  It remains at rest unless acted upon
• What causes a sprinter to change their state of motion?

  A force applied to the blocks
• What happens to a ball in motion according to Newton's 1st Law?

  It keeps moving until a force changes it
• What is the relationship between acceleration and force?

  Acceleration is directly proportional to force
• What is the momentum formula in sports?

  Momentum = Mass x Velocity
• Calculate the force on Usain Bolt with mass 94 kg and acceleration 9.5 m/s².

  F = 893 Newtons
• What determines the acceleration of a sprinter?

  The size and direction of the force applied
• What does Newton's 3rd Law of Motion state?

  For every action, there is an equal reaction
• What is ground reaction force?

  The force exerted by the ground on a performer
• How does a football remain at rest on the penalty spot?

  Until an external force is applied
• What happens when a greater force is applied to a football?

  The greater the force, the greater the acceleration
• How does a tennis player move towards a ball during a rally?

  By applying force through muscular contraction
• How do Newton's Laws apply to a high jumper taking off?

  • Force applied by muscles to jump
  • Law of Inertia: Remains stationary until force applied
  • Law of Acceleration: Force = Mass x Acceleration
  • Ground reaction force propels the jumper
• Give examples of Newton's Laws in a team sport.

  1. Law of Inertia: Player remains still until pushed
  2. Law of Acceleration: Force applied determines player speed
  3. Law of Action/Reaction: Player pushes against ground to move
• What is the relationship between mass and momentum in sports?

  Momentum equates to mass when constant
• What governs the direction of a performer's movement?

  The force applied to the ground
• How does a performer slow down during a movement?

  By using muscles as brakes
• What is the significance of the force applied by a sprinter?

  It determines acceleration and momentum
• How does a tennis player maintain constant velocity towards the ball?

  Until another force is applied
• What happens to a ball when an external action force is applied?


  It travels in the direction of the force