Question on Third law of motion.

In summary, the third law of motion, also known as Newton's third law, states that for every action, there is an equal and opposite reaction. This law differs from the first and second laws of motion, which deal with the motion of a single object, by involving the interaction between two objects. The third law can be observed in everyday situations, such as walking, sitting, and shooting a gun, but there are exceptions, such as in cases of friction or non-rigid bodies.
  • #1
yaseen shah
32
0
Acc: to the third law of motion.
if one body acts force on another body then another body acts same force on it.
Ex:One block hits another block.so they apply force on each other

My question is that!
why block not cames to rest.and for small interval it has some vel:.
 
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  • #2
They still apply the same force. The only thing is the block that was moving initially is carrying momentum when it collides with the second.
 
  • #3


According to the third law of motion, when one body acts a force on another body, the second body will exert an equal and opposite force on the first body. This means that the two forces are acting on different objects and do not cancel each other out. Therefore, it is possible for the blocks to continue moving after colliding with each other, as the forces are still acting on them. The velocity of the blocks may decrease over time due to other external forces, such as friction, but the initial force from the collision is still present. Additionally, the duration of the force is also a factor - if the collision is short and intense, the blocks may continue moving with a significant velocity.
 

FAQ: Question on Third law of motion.

What is the third law of motion?

The third law of motion, also known as Newton's third law, states that for every action, there is an equal and opposite reaction. This means that when an object exerts a force on another object, the second object will exert a force back on the first object in the opposite direction.

How is the third law of motion different from the first and second laws?

The first and second laws of motion deal with the motion of a single object, while the third law involves the interaction between two objects. The first law states that an object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an external force. The second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Can you give an example of the third law of motion?

One example of the third law of motion is when you push against a wall. The force you exert on the wall will cause the wall to push back on you with an equal force, keeping you in place. Another example is when a rocket launches into space. The force of the rocket's exhaust pushing down is matched by an equal and opposite force pushing the rocket up.

How does the third law of motion apply to everyday life?

The third law of motion can be observed in many everyday situations. For example, when you walk, your foot pushes against the ground and the ground pushes back on your foot, propelling you forward. When you sit on a chair, your weight pushes down on the chair and the chair pushes back up on you. It also explains why you feel a recoil when shooting a gun or why a balloon flies in the opposite direction when air is released from it.

Are there any exceptions to the third law of motion?

While the third law of motion holds true in most situations, there are some exceptions. One example is in the case of friction, where the force of friction may not be equal to the force applied. Additionally, in situations with non-rigid bodies or objects with variable mass, the third law may not apply exactly.

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