CBSE BoardEnglish MediumSTD 12 CommercePhysical EducationKinesiology, Biomechanics and Sports4 Marks
Question
Explain the law of reaction
✓
Answer
Law of Reaction: It is the third law of motion. According to this law, 'For every action, there is always an equal and opposite reaction.' There are also many examples in sports where this law is applied, e.g., springing on diving board for gaining maximum height, bouncing on trampoline, thrust against the water in swimming. The application of this law in various sports is given below.
Swimming: A swimmer pushes the water backwards (action). The water pushes the swimmer forward (reaction) with the same force.
Walking: When a person walks, he/ she presses the ground in the backward direction (action) by his/ her feet. The ground pushes him/her in the forward direction with an equal force (reaction).
Shooting: In shooting, when a gun or pistol is fired, the bullet moves forward (action). The gun or pistol jerks backward (reaction).
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