IGPE Chpt 5 : Principle of Biomechanics

State the equation used to calculate force

• F = MA

• F = AM

• M = FA

• A = FM

A footballer kicks a football weighing 1kg with a force of 25N. Calculate the acceleration of the ball

• A = 25N

•       A = 25 m/s²

• A = 1kg

• A = 20 m/s²

Name the forces acting upon the following : A cyclist

• Air resistance, gravity, muscular force

• Air resistance, gravity, force applied at release

Name the forces acting upon the following:

"A sprinter pushing out of the starting blocks"

• Air resistance, gravity, muscular force,

• Air resistance, gravity, muscular force,

Name the forces acting upon the following:

"A golf ball in flight"

• Air resistance, gravity, muscular force,

• Air resistance, gravity, force applied at release

What will happen to a cyclist if the air resistance force exceeds (is greater than) muscular force?

• They speed up (acceleration)

• They slow down (deceleration)

• They remains the same (Constant Velocity)

Which class of lever is used at the hip joint when kicking a football?

• 1st Class Lever

• 2nd Class Lever

• 3rd Class Lever

Provide an example in the human body of each of the following:

1st Class Lever

• Neck (heading the ball in football),

• Ankle (pushing off/dorsiflexion when running),

• Elbow (performing a bicep curl)

Provide an example in the human body of each of the following:

2nd Class Lever

• Neck (heading the ball in football),

• Ankle (pushing off/dorsiflexion when running),

• Elbow (performing a bicep curl)

Provide an example in the human body of each of the following:

3rd Class Lever

• Neck (heading the ball in football),

• Ankle (pushing off/dorsiflexion when running),

• Elbow (performing a bicep curl)