A body is thrown vertically upward with velocity u. The distance travelled by it in the 7th and 8th second are equal. The displacement in 8th second is equal to _________. (take g=10m/s2)
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when a body is throwm upward v=0
use the formula v=u+gt
0=u+-10×8
0=u+-80
80=u
to find distance
v²-u²=2gs
0²-80×80=2×-10×s
-6400=-20s
s=-6400÷-20
s= 320m
minus minus gets cancelled
use the formula v=u+gt
0=u+-10×8
0=u+-80
80=u
to find distance
v²-u²=2gs
0²-80×80=2×-10×s
-6400=-20s
s=-6400÷-20
s= 320m
minus minus gets cancelled
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