Fizik Tingkatan 4 Kssm Aktiviti 13 Work Work: Jawapan Buku Teks

KE = ½ × m × v^2 = ½ × 2 kg × (4 m/s)^2 = 16 J

A 20 N force is applied to a block, causing it to move 3 m to the right. Calculate the work done on the block.

where F is the force applied and s is the displacement of the object.

Gravitational potential energy is the energy an object possesses due to its height above the ground. The gravitational potential energy (GPE) of an object is given by the equation: KE = ½ × m × v^2 =

Energy is the ability to do work. There are two main types of energy: kinetic energy and potential energy.

GPE = m × g × h = 10 kg × 9.8 m/s^2 × 4 m = 392 J

A machine lifts a 100 kg load to a height of 5 m in 10 seconds. If the machine requires an input energy of 5000 J, calculate its efficiency. Gravitational potential energy is the energy an object

W = F × s

Then, calculate the efficiency:

Solution:

W = F × s = 50 N × 2 m = 100 J

In this guide, we will explore the concept of work, energy, and efficiency in the context of physics. Specifically, we will focus on Aktiviti 13 in the Buku Teks Fizik Tingkatan 4 KSSM (Kurikulum Standard Sekolah Menengah) textbook. This activity aims to help students understand the relationship between force, displacement, and work done, as well as the concepts of kinetic energy, potential energy, and efficiency.

Then, calculate the efficiency:

A 2 kg car is moving at a velocity of 4 m/s. Calculate its kinetic energy.

Efficiency = (Work done / Energy input) × 100%