If a body of mass $5 g$ initially at rest is acted upon by a force of $50$ dynes for $3 s$ . Then the impulse will be

0.98 \times 10^{- 3} N s

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1.5 \times 10^{- 3} N s

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2.0 \times 10^{- 3} N s

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2.5 \times 10^{- 3} N s

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Solution

The correct option is B $1.5 \times 10^{- 3} N s$
Impulse, $I = F \times △ t$
$= 50 \times 10^{- 5} \times 3 = 1.5 \times 10^{- 3} N s$ .

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If a body of mass 5 g initially at rest is acted upon by a force of 50 dynes for 3 s. Then the impulse will be

The correct option is B 1.5×10−3NsImpulse, I=F×△t=50×10−5×3=1.5×10−3Ns.

If a body of mass $5 g$ initially at rest is acted upon by a force of $50$ dynes for $3 s$ . Then the impulse will be

The correct option is B $1.5 \times 10^{- 3} N s$
Impulse, $I = F \times △ t$
$= 50 \times 10^{- 5} \times 3 = 1.5 \times 10^{- 3} N s$ .