SmarterEd

Aussie Maths & Science Teachers: Save your time with SmarterEd

HMS, TIP EQ-Bank 088 MC

A tennis coach notices a player's serve lacks power despite good technique. Which biomechanical adjustment would most effectively increase serve velocity?

  1. Reducing shoulder rotation
  2. Keeping weight on the back foot throughout
  3. Transferring weight from back foot to front foot
  4. Minimising leg drive from the ground
Show Answers Only

\(C\)

Show Worked Solution
  • C is correct: Transferring weight from back foot to front foot generates momentum through the kinetic chain, allowing forces to build from the ground up and significantly increase serve velocity.

Other options:

  • A is incorrect: Reducing shoulder rotation decreases the range of motion and torque generation, limiting the speed of the racquet.
  • B is incorrect: Keeping weight on the back foot prevents momentum transfer through the body, failing to utilise ground reaction forces for power generation.
  • D is incorrect: Minimising leg drive removes the foundation of the kinetic chain, as pushing off the ground provides the initial force that transfers through the body to the serve.