In a legend the hero kicked a body pig so that he is projected with a speed greater than that of his cry. If the weight of the body pig is assumed to be 5 kg and the time of contact 0.01 sec ., the fo

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In a legend the hero kicked a body pig so that he is projected with a speed greater than that of his cry. If the weight of the body pig is assumed to be 5 kg and the time of contact 0.01 sec ., the force with which the hero kicked him was -

TestHub · Accepted Answer

To find the force, we use the impulse-momentum theorem: $F Δ t = m Δ v$ .

The speed of sound (cry) is approximately $343 m / s$ .

Given $m = 5 k g$ and $Δ t = 0.01 s$ .

Assuming the pig starts from rest, $Δ v = 343 m / s$ .

$F = \frac{m Δ v}{Δ t} = \frac{5 k g \times 343 m / s}{0.01 s} = 171500 N = 1.715 \times 1 0^{5} N$ .

The closest option is $1.65 \times 1 0^{5} N$ .

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