Jawapan Buku Teks Fizik Tingkatan 4 Kssm Aktiviti 13 Work Work May 2026

Efficiency = (Work done / Energy input) × 100% = (4900 J / 5000 J) × 100% = 98%

Work done = m × g × h = 100 kg × 9.8 m/s^2 × 5 m = 4900 J Efficiency = (Work done / Energy input) ×

Solution:

Work done = m × g × h = 50 kg × 9.8 m/s^2 × 2 m = 980 J Efficiency = (Work done / Energy input) ×

First, calculate the work done:

where m is the mass of the object and v is its velocity. Efficiency = (Work done / Energy input) ×