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vt^2 = vo^2 + 2as
10^2 = 5^2 + 2(a)(10)
100 = 25 + 20a
a= 75 /20 = 37,5
F= m x a
=5 . 37.5 = 18.75 N
maaf bila salah
Vt=vo+a.t2
10=5+a.102
10=5+100a
10-5=100a
5=100a
5/100=a
1/20=a
a=1/20 ms2
f=m.a
5.1/20
1/4 N