Force acts for eight seconds on a body of mass 10 KG is therefore then stops acting on the body discuss 80 m in the next five seconds find the force
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t=8sec, m=10kg v=0 ,
case=2
u=0,s=80m,t=5sec
s=ut+1/2at²
80=0+1/2×a ×25
160=25a
a=160/25
f=ma
f=10×160/25
f=320/5
f=64n
in first case body comes in rest so in case 2 I take u as 0
case=2
u=0,s=80m,t=5sec
s=ut+1/2at²
80=0+1/2×a ×25
160=25a
a=160/25
f=ma
f=10×160/25
f=320/5
f=64n
in first case body comes in rest so in case 2 I take u as 0
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the force acting on the body is 1000newton
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