A body of mass m=3.513 kg is moving along x - axis with a speed of 5.00 ms ^{-1} . magnitude of its

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4-1.Newton's Laws of Motion

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A body of mass $m=3.513 \;kg$ is moving along the $x$ - axis with a speed of $5.00 \;ms ^{-1}$. The magnitude of its momentum is recorded as (Consider significant figures)

A

$17.57 $

B

$17.6 $

C

$17.565$

D

$17.56$

(AIEEE-2008)

Solution

$p = mv =3.513 \times 5.00=17.565\; kg ms ^{-1}$

since result should have only $3$ significant digits

$p =17.6\;kg ms ^{-1}$

Standard 11

Physics

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