1.

An object starting from rest travels to the 20m in first 2s and 160m in next 4s what will be the velocity after 7second from the start

Answer»

ANSWER:

u=0 distance =20m in first 2 seconds

therefore SPEED = d/t I.e. 20/2= 10m/a

u=0 distance = 160M 8n NEXT 4 seconds

therefore velocity after 7 seconds from start =160+20/4+2=

180/6=30 the velocity after 7 seconds of start is 30m/s



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