Final Answer:
The potential energy of the pillow after 0.6 seconds is 117.6 joules.
Step-by-step explanation:
After 0.6 seconds, the potential energy (
PE) of the pillow can be determined using the formula for gravitational potential energy (PE = mgh), where
m is the mass of the pillow,
g is the acceleration due to gravity, and
ℎ
h is the height. Assuming a mass of 0.6 kg for the pillow and using the standard gravitational acceleration on Earth (9.8 m/s²), the calculation is as follows:
PE = m ⋅ g ⋅ h
PE = 0.6 kg ⋅ 9.8 m/s² ⋅ 2 m
PE = 11.76 J
Therefore, after 0.6 seconds, the potential energy of the pillow is 11.76 joules. It's crucial to note that potential energy in this context is gravitational potential energy, representing the stored energy an object possesses due to its position relative to the Earth's surface.
Understanding the physics behind this calculation is essential. As the pillow falls, gravitational potential energy is converted into kinetic energy, reaching its maximum velocity at the moment of impact. This relationship between potential and kinetic energy is a fundamental concept in classical mechanics, demonstrating the interconnectedness of energy forms during the pillow's descent. The accuracy of the answer relies on the precise application of the gravitational potential energy formula and understanding the principles governing the interaction of mass, gravity, and height.