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F = 25 N
v = 10 m/s
t = 4 s
Ditanya :
W ?
Penyelesaian :
a = [ vt - vo ] / t
= [ 10 - 0 ] / 4
= 2,5 m/s2
s = vo t + 1/2 a t^2
= 1/2 (2,5) (4)^2
= 20 m
W = F s
= (25) (20)
= 500 J