Do action and reaction act on the same body or on different bodies? Explain your answer with the help of example. How are
they related in magnitude and direction? Write the total momentum of the gun and the bullet before firing
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Answers
Answer:
Yes,action and reaction acts on same body.
For example, when you walk then your leg pushes ground backward whereas ground pushes you forward but the main thing is that on leg reaction force acts when leg applied its action.
Fa= -Fr
where Fa - force of action
. Fr - force of reaction
Before firing,the total momentum of gun and bullet is zero
Answer:
No, action and reaction act on different bodies.
Explanation:
When we walk, our leg pushes the ground backward. Here the action is on the ground by the foot. The ground pushes us forward. So the reaction is on our leg by the ground. Hence action and reaction do not act on the same body.
According to Newton's third law, the force exerted by object 1 upon object 2 is equal in magnitude and opposite in direction to the force exerted by object 2 upon object 1. Hence the magnitude of both action and reaction is same, but they are acting in opposite directions.
The total momentum of the bullet and the gun before the firing is zero because both are at rest. Momentum= mass x velocity, in which velocity is 0 as both are not moving. Hence momentum is 0.