Jawabanmu

  • rsdh
  • Gemar Membantu
2014-02-12T16:35:23+07:00
Usaha = gaya × perpindahan gaya = kg m/s2 8000 J = massa . 5m/s2 . 20m 8000 = massa . 100 massa = 8000 : 100 massa = 80kg