A 5 kg object is moving at a velocity of 2 m/s. Calculate its kinetic energy.
KE = ½ × m × v^2 = ½ × 2 kg × (4 m/s)^2 = 16 J
In this guide, we've explored the concepts of work, energy, and efficiency in the context of physics. We've also applied these concepts to Aktiviti 13 in the Buku Teks Fizik Tingkatan 4 KSSM. By understanding these concepts, students can develop a deeper appreciation for the relationships between force, displacement, energy, and efficiency.
Work done = m × g × h = 100 kg × 9.8 m/s^2 × 5 m = 4900 J A 5 kg object is moving at a velocity of 2 m/s
A 50 N force is applied to a block, causing it to move 2 m to the right. Calculate the work done on the block.
Then, calculate the efficiency:
First, calculate the work done:
W = F × s
A 2 kg car is moving at a velocity of 4 m/s. Calculate its kinetic energy.
Solution:
Solution:
GPE = m × g × h = 10 kg × 9.8 m/s^2 × 4 m = 392 J
where m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s^2), and h is the height of the object above the ground. We've also applied these concepts to Aktiviti 13
Energy is the ability to do work. There are two main types of energy: kinetic energy and potential energy.
Now, let's apply the concepts we've learned to Aktiviti 13 in the Buku Teks Fizik Tingkatan 4 KSSM.