no 2 aja ya kalo bisa no 3 jg
Energi Kinetik - Potensial
Diketahui:
- m = massa = 500 g = 0.5 kg
- Ek = energi kinetik = 361 J
- m = massa = 900 g = 0.9 kg
- g = gravitasi = 10 m/s²
- Ep = energi potensial = 900 J
Ditanya:
- v = kecepatan ?
- h = ketinggian ?
Jawaban 1
Ek = ½ × m × v²
361 = ½ × 0.5 × v²
361 = 0.25 × v²
v² = 361/0.25
v² = 1.444
v = 38 m/s ✔
Jawaban 2
Ep = m × g × h
900 = 0.9 × 10 × h
900 = 9 × h
h = 900/9
h = 100 m ✔
