Jawapan Buku Teks Fizik Tingkatan 4 Kssm Aktiviti 13 Work Work [DIRECT]

KE = ½ × m × v^2 = ½ × 5 kg × (2 m/s)^2 = 10 J

Efficiency = (Work done / Energy input) × 100% = (4900 J / 5000 J) × 100% = 98% KE = ½ × m × v^2 =

A 5 kg object is lifted to a height of 2 m above the ground. Calculate its gravitational potential energy. KE = ½ × m × v^2 =

First, calculate the work done:

W = F × s