Question

Tolong di jawab iya No. 19 & 21!
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Answer 1

19.diket m=300 g =0,3kg
g=10m/s²
hA=4 m
ep=m x g x h
=0.3x10x4
=12 JOULE

21.diket m=2kg
v=8 m/s

ek=1/2 m x v²
=1/2 x 2 x 8²
= 1 x 64
= 64 joule