Question

A hockey player is moving northward and suddenly turns westward with the same speed to avoid an opponent. The force that acts on the player is

• A. Frictional force along westward.
• B. Muscle force along southward.
• C. Frictional force along south-west
• D. Muscle force along south-west.

Answer 1

The correct option is C Frictional force along south-west

If player move from A to B and B$\leftrightarrow$C.

A to B deaccelerates along Ba (south), and then increase their velocity towards west by accelerating along B$\leftrightarrow$C (west).

Net acceleration,

$\overrightarrow{a}=(\overrightarrow{a_1}+\overrightarrow{a_2})$ along south-west.

$\overrightarrow{a}$ is due to friction force, hence friction force also act along south - west