Created : Ena Nurfalah Rachmatiana

131145

1A

1. Berat

W=m.g = kg . ms2 = M

LT2 = [ MLT -2 ]

Usaha

W= F.s ------> m.a ------> kg. ms2 . m

------> kgm2

m2 = M. L

2

T 2 = [ M L T-2]

Gaya

F= m.a = kg. ms2 = M . LT 2 = [ MLT-2]

2.

Y

Va = 15 arahnya (VW)°

Vb = 20 arahnya (XY)°

45 ° ket : VW =11

11° XY=45

(0,0) ∅=45°−11°=34 ° X

R = √a2+b2+2.a .b .cos∅

= √152+202+2.15 .20.cos34 = √225+400+2.15.20 .0,83

= √625+30.16,6

= √625+498

= √1123

= 33,5 m

V=dt = 33,510 = 3,35 m/s