derivation of laws

Asked by  | 29th Jul, 2008, 04:46: PM

Expert Answer:

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Second law mathematically .,

F = ma

now F= 0  ( 1st law implies in absence of external force )

so , m a = 0

but  mass cannot be zero ; so acceleration is zero which is possible only under foll. two conditions:

(i) body is at rest

(ii) body is in uniform motion

which establishes , Newton's 1st law of motion : A body continues in the state of rest or of uniform motion in a straight line until acted uponby an external force.

Answered by  | 30th Jul, 2008, 01:23: AM

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