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Showing posts from January, 2020

What are the laws of motion?

Galileo's law of inertia
A body continues in its state of rest or constant velocity along the same straight line, unless not disturbed by some external force. This is Galileo's law of inertia.
Newton's laws of motion
Newton's gives three law of motion:
1. Newton's first law motion
A body continues in its state of rest or constant velocity along the same straight line, unless not disturbed by some external force. This is Newton's first law motion.
2. Newton's second law motion
Time-rate of change of momentum is proportional to the applied external force. This is Newton's second law motion
3. Newton's third law motion
To every action there is always equal and opposite reaction. This is Newton's third law motion.
Linear momentum
Linear momentum of a moving particle is given by,

$$ \vec{p} = m\vec{v}$$

Where m is the mass of moving particle with velocity \( \vec{v}\)
Force
Force on a particle having mass m is given by,

$$\vec{F} = m\vec{a}$$

Where, \(\vec{a}\) is th…