Question

state second law of motion and stables that f equal m into a
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Answer 1

Answer:

p=m.v

Explanation:

momentum = mass . velocity

Answer 2

Explanation:

The second law of motion states that:

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Derivation;

Let the external force be F, initial velocity be u ,final velocity be v, the time interval be t.

→ p1(initial momentum ) = mu

→p2(final momentum )= mv

Rate of change of momentum = (mv-mu) /t

→ p = (mv-mu) /t

According to newton’s IInd law , F α p

→F =k× (mv-mu)/t { k is a constant }

(mv-mu)/t { k is a constant }In S.I.Units, the value of k is 1

→F =1(mv-mu)/t

→F = (mv-mu)/t

So. F= m(v-u)/t

→F = ma

Hence proved