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A hockey player is moving northward and ...

A hockey player is moving northward and suddenly turns westward with the same speed to avoid an opponet. 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

Text Solution

Verified by Experts

The correct Answer is:
C
Consider the adjacent diagram

Let `" " OA = p_(1)`
= Initial momentum of player northward
`AB = p_(2)` = Final momentum of player towards west.
Clearly `" " OB = OA + AB`
Change in momentum = `p_(2) - p_(1)`
= AB - OA = AB + (-OA)
= Clearly resultant AR will be along south-west .
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