The second law of motion states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of force.
MATHEMATICAL FORMULATION OF SECOND LAW OF MOTION
Suppose an object of mass, m is moving along a straight line with an initial velocity, u. It is uniformly accelerated to velocity, v in time, t by the application of a constant force, F throughout the time, t. The initial and final momentum of the object will be,
p1 = mu and p2 = mv respectively.
1. One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force. ...
2. The SI unit of force is the newton (N); 1 newton is the force that acts on an object of mass 1 kg to produce an acceleration of 1 m/s2. ... Velocity is a vector quantity, and therefore acceleration is also a vector quantity. The SI unit of acceleration is metres/second2 (m/s2).
3. The second law of motion gives us a method to measure the force acting on an object as a product of its mass and acceleration.
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Ques 1 : Define one unit of force.
Ques 2 : State SI unit of acceleration and force.
Ques 3 : Which law of motion gives a method to measure the force ?
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