When a person hits the stone , he gives an impulsive force to the stone, Also the stone gives him an impulsive reaction to the foot of the person. Due to this impulsive reaction man foot got injured.
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because the stone is so hard
Man hits on stone wall and gets injured because of conservation of momentum and due to Newtons third law of motion. When man hits a stone, the same amount of force that he hits the stone with acts back to the foot (every action has equal and opposite reaction). This is why hitting on stone causes injury to the foot
here is your answer dear.
energy-amplitude mathematical . the energy transported by a wave is directly proportional to the square of the amplitude of the wave. observe that whenever the amplitude increased by a given factor, the energy value is increased by the same factor squared.
sorry dear where is the diagram