Newtons Laws, force and free body diagrams

• What is the first law of motion called?

  Law of Inertia
• What is the second law of motion called?

  Law of Acceleration
• What is the third law of motion called?

  Law of Reaction
• What does the law of inertia state?

  A body continues in rest or uniform velocity
• What does the law of acceleration state?

  Rate of change in momentum is proportional to force
• What does the law of reaction state?

  Every action force has an equal opposite reaction
• How does a golf ball demonstrate the law of inertia?

  It remains stationary until struck by a club
• How does a tennis ball demonstrate the law of acceleration?

  Greater force results in faster ball travel
• How does a high jumper demonstrate the law of reaction?

  Downward force creates an upward reaction force
• What are Newton's Three Laws of Motion?

  1. Law of Inertia: A body remains at rest or uniform velocity unless acted upon.
  2. Law of Acceleration: Change in momentum is proportional to the force applied.
  3. Law of Reaction: Every action has an equal and opposite reaction.
• How does Newton's first law apply to a sprinter at the start?

  The sprinter remains stationary until pushed off
• How does Newton's second law apply to a runner in a race?

  Runner accelerates based on friction force
• How does Newton's third law apply to a tennis serve?

  Player pushes down, ground pushes up equally
• How do Newton's laws apply to a goalkeeper saving a header?

  • Law of Inertia: Ball remains stationary until acted upon.
  • Law of Acceleration: Greater force leads to faster ball movement.
  • Law of Reaction: Ball exerts force back on the goalkeeper's hand.
• How do Newton's laws apply to a golf shot?

  • Law of Inertia: Golf ball stays on tee until struck.
  • Law of Acceleration: More force leads to faster ball acceleration.
  • Law of Reaction: Ball exerts force back on the club.
• How do Newton's laws apply to hurdling?

  • Law of Inertia: Hurdler maintains velocity until hitting a hurdle.
  • Law of Acceleration: More friction leads to greater acceleration.
  • Law of Reaction: Hurdler pushes against hurdle, receiving a backward force.
• What is the formula for calculating force?

  Force = mass x acceleration
• What is meant by the term inertia?

  Resistance of a body to change its motion
• What happens to a ball before a free kick?

  It remains stationary until acted upon
• What is the relationship between mass and inertia?

  More mass means more inertia
• How do Newton's laws explain a sprinter's start?

  Sprinter pushes down, accelerating forward from blocks
• What is air resistance?

  A force opposing motion through air
• How does increasing velocity affect air resistance?

  It leads to an increase in air resistance
• How does a sprinter's velocity relate to air resistance?

  Greater velocity increases air resistance against them
• What shape reduces air resistance?

  Aerodynamic shape reduces air resistance
• Why do ski jumpers wear aerofoil helmets?

  To improve streamlining and minimize air resistance
• What happens to air resistance as front cross-sectional area decreases?

  Air resistance decreases as FXA decreases
• How does surface smoothness affect air resistance?

  Smoother surfaces decrease air resistance
• Why do slalom skiers adopt a low crouched position?

  To reduce air resistance during skiing
• How do Lycra suits help sprinters?

  They reduce the effect of air resistance
• What is friction?

  A force opposing motion of two surfaces in contact
• How does a wet surface affect friction?

  It reduces friction between surfaces
• How does a player's mass affect friction?

  Greater mass increases friction with the surface
• What is the unit of measurement for force?

  Newtons (N)
• What is weight?

  The gravitational pull exerted on a body
• What effect can a force have on a sporting body?

  It can create motion, accelerate, or decelerate
• How does ground surface impact friction levels?

  Rougher surfaces create more friction
• How does front cross-sectional area affect air resistance?

  Smaller FXA reduces air resistance
• What is the formula for force?

  Force = mass x acceleration
• What is the law of inertia?

  A body remains at rest unless acted upon