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State the second law of motion

Question

State the second law of motion

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Solution

The second law of motion, also known as Newton's second law, states that the rate of change of momentum of a body is directly proportional to the force applied and this change in momentum takes place in the direction in which the force is applied.

In simpler terms, it means that the force acting on an object is equal to the mass of that object times its acceleration (F = ma). This law explains how the velocity of an object changes when it is subjected to an external force.

Here are the steps to understand it:

  1. Consider an object of mass 'm' moving with an initial velocity 'u'.
  2. Let a force 'F' act on it for time 't' and its velocity becomes 'v'.
  3. The acceleration 'a' produced is given by the change in velocity divided by the time taken, i.e., a = (v - u) / t.
  4. According to the second law of motion, the force applied on the object is equal to the product of its mass and the acceleration produced, i.e., F = m * a.
  5. Substituting the value of 'a' in the equation, we get F = m * (v - u) / t.
  6. This equation is also known as the equation of motion.

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Similar Questions

Newton’s second law of motion may be stated as:

The second law of motion states that1 pointto every action there is an equal and opposite reactiona body will continue to be at rest or in motion unless and external force is applied to itif the external force acting on a system of bodies is zero, then the momentum of the system remains constantthe force applied to an object is directly proportional to the mass of the object and the acceleration.

Newton’s second law of motion states an object’s is in the same direction as the net force on the object and is equal to the net force exerted on it divided by its .

Which formula describes Newton’s second law of motion?

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