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Question
একটি চলন্ত ট্রেনকে ব্রেক করে 5 সেকেণ্ডে থামিয়ে দেওয়া হয়। ট্রেনটির গড় মন্দন 100 মি. / সেকেন্ড২ হলে উহার গতিবেগ কত ছিল?
1000
ms
-
1
200
ms
-
1
400
ms
-
1
500
ms
-
1
ANSWER : 4
Descrption
<p style="margin-left:0px;">গতিবেগের পরিবর্তন = গড় মন্দন * সময়</p><p style="margin-left:0px;">গতিবেগের পরিবর্তন = v2 - v1</p><p style="margin-left:0px;">100 * 5 = v2 - v1</p><p style="margin-left:0px;">v2 = v1 + 500</p><p style="margin-left:0px;">v2 = ?</p><p style="margin-left:0px;">v1 = 0 (কারণ ট্রেনটি থামিয়ে দেওয়া হয়েছে)</p><p style="margin-left:0px;">v2 = 0 + 500</p><p style="margin-left:0px;">v2 = <strong>500 </strong></p><p style="margin-left:0px;">অতএব, উত্তর হল <strong>500 ms<sup>-1</sup></strong></p><p><br> </p>
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