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A body travels 200 can in the first 2seconds and 220 cm in the next 2 seconds.what is the initial velocity of the body? |
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Answer» Explanation: s=ut+21at2 For case 1. 200=2u+2a u+a=100....(1) For case 2. .i.e. next 4 SECONDS, we have distance =420 CM and time =6 s 420=6u+18a u+3a=70....(2) SOLVING equation 1 and 2, we GET, u=115 cm/s and a=−15 cm/s2 Now by v=u+at v=115−15×7 v=10 cm/s plzzz mark me as a branlist |
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