1.

A bus starts from rest accelerating uniformly with 4ms^(-1)at t =10s a stone is dropped out of a window of the bus 2mhigh what are the (i) magnitude of velocity and (ii) accelearatio of the stone at 10.2 s take g=10 ms^(-2)

Answer» <html><body><p></p>Solution :Given<br/>Acceleration`=4ms^(-<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)` <br/>Time=- 10s <br/> (i)horizontalvelocityof the busor the stoneat t= 10 is<br/> `v_(x) = <a href="https://interviewquestions.tuteehub.com/tag/u-1435036" style="font-weight:bold;" target="_blank" title="Click to know more about U">U</a> +at = 0 + <a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a> xx 10` <br/>forverticalmotionof <a href="https://interviewquestions.tuteehub.com/tag/thestone-3206305" style="font-weight:bold;" target="_blank" title="Click to know more about THESTONE">THESTONE</a><br/> `u= 0a=g= 10 ms^(-2)t =10.2-10=0.2s` <br/> `v_(y)=0+10 xx 0.22ms^(-2)` <br/>Magnitudeof teh resultantvelocityof the stone is<br/> `v= sqrt( v^(2) + v^(2)) = sqrt(40^(2) +2^(2))` <br/> (ii) Afterteh stoneis droppeditsaccelerationalonghorizontal is <a href="https://interviewquestions.tuteehub.com/tag/zero-751093" style="font-weight:bold;" target="_blank" title="Click to know more about ZERO">ZERO</a>. it has only averticalacceleration of `10 ms^(-2)`</body></html>


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