Question 762998: an object starting from rest travels 20 m in first 2 sec and 160m in next 4 sec. what will be the velocity after 7 sec from the start Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! an object starting from rest travels 20 m in first 2 sec and 160m in next 4 sec. what will be the velocity after 7 sec from the start
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s = at^2 = 10t^2
a = 10 m/sec/sec
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v = at = 10*7
v = 70 m/sec
