7. স্থিরাবস্থা থেকে যাত্রা শুরু করে একটি বস্তু সমত্বরণে 400 m পথ অতিক্রম
করল |( i )অর্ধেক সময়ে বস্তুটি কত পথ অতিক্ৰম করেছে? (ii) কত শতাংশ সময়ে বস্তুটি অর্ধেক পথ অতিক্রম করবে?
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