An object starting from rest travels 20m in 1st 25 seconds and 160 m in next 4 sec . What will be the velocity after 7sec from the start.
Shobana13:
The answer-51.1m/s. Actually to derive the velocity u have to apply the formula s=ut+1/2a (t) square to find acceleration and then use the formula v=u+at...
Sorry answer is 51.1m/s.. before I mentioned -51.1m/s. It's 51.1m/s..
hi
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the velocity would be same when he travels in 1st 25 sec
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