Question

an object starting from rest Travels 20 m in first 2 seconds and 160 m in next 4 second what will be the velocity after 7 seconds from the start ​

Answer 1

Answer:

70 m/s

use the formula s=ut+1/2at^2

here u is zero because it starts from rest

so 20=1/2×a×2×2

a=10

with

v=u+at

v is unknown for 7 seconds. u is zero a is 10 and t is 7

by substituting we get v=70

hope it helped.

hey hudugi marthodya nanna.