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How can we derive Newton's second …

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How can we derive Newton's second law by using the first law?

Posted by Radhika Garg 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years, 2 months ago

Second Law of Motion:

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.

The quantity of motion in a body depends on the product of mass and velocity of the body termed as momentum.

The momentum (p) of a body is defined as the product of its mass (m) and velocity (v) and has the same direction as that of the velocity. Its SI unit is kilogram metre per second (kg m s⁻¹).

Momentum = mass × velocity

p = m × v

Momentum has both magnitude as well as direction; hence it is a vector quantity.

Momentum of a body at rest is zero.

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