A body old 2 kg has an initial speed 5 ms^{-1 | vedclass

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Question

$\mathrm{m}=2 \mathrm{kg}$
$\mathrm{V}=5 \mathrm{m} / \mathrm{s}$
$\mathrm{F} \cdot \mathrm{t}=\mathrm{m}\left(\mathrm{V}_{2}-\mathrm{V}_{1}\right)$

Vedclass · Accepted Answer

$14.25$

Vedclass · Answer

$\mathrm{m}=2 \mathrm{kg}$
$\mathrm{V}=5 \mathrm{m} / \mathrm{s}$
$\mathrm{F} \cdot \mathrm{t}=\mathrm{m}\left(\mathrm{V}_{2}-\mathrm{V}_{1}ight)$
area uncles curve $=\mathrm{F} 	imes \mathrm{t}\{(1 / 2)  	imes 2 	imes 4\}$$+(2 	imes 4)+(2 	imes 2.5)+[(1 / 2) 	imes 0.5 	imes$ $(4+2.5)]$
$=4+8+5+[(1 / 2) 	imes 0.5 	imes 6.5]$
$F 	imes t=18.625$
$m\left(V_{2}-V_{1}ight)=18.625$
$\mathrm{V}_{2}-\mathrm{V}_{1}=\{(18.625) / 2\}$
$\mathrm{V}_{2}=\mathrm{V}_{1}+9.3125$
$=5+9.3125$
$\mathrm{V}_{2}=14.25 \mathrm{m} / \mathrm{s}$

A body old $2\ kg$ has an initial speed $5\ ms^{-1}$ . A force acts on it for some time in the direction of motion. The force time graph is shown in figure. The final speed of the body .......... $ms^{-1}$

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