tolong yaa di bantu kerjakan beserta caranya

1. F.s = W = usaha
2.
3. W = F.s = 50. 2 = 100 J
4. W = Ek =½Mv² = ½.4000.(25-15)² = 2000.100= 200000 J =200KJ
5. Ep = mgh = 0,5.10.4 = 20 J
6.
7. m.v = p = momentum
8.


Maaf cuma bisa bantu segini dan maaf kalau salah :)