Jawabanmu

2014-04-08T01:17:10+07:00
Dik: m=80kg Vo=18km/jam=5m/s t=10s Vt=72km/jam=20m/s
Dit: W & P?
Vt=Vo+at
20=5+a.10
a=1,5 m/s2

S=Vot+1/2at2
=5.10 + 1/2.1,5.10^2
=125m

W=F.s
=m.a.s
=80.1,5.125=15.000 J

P=W/t
15000/10=1500Watt