4 Compare What is the difference between
temperature, thermal energy, and heat?

The term temperature refers to the average amount of heat or the motion energy of particles in a substance. It measures the hotness and coldness of a substance. If an object has particles that move very fast, then it has a high temperature.

Temperature is different from the term thermal energy. Thermal energy is the total motion energy of particles in a substance. The movement of particles is always dependent on their number. If an object contains many particles, then it has greater thermal energy.

On the other hand, Heat is the energy that is involved in the movement of particles between objects that have different temperatures, particularly from an object with a high temperature to an object with a low temperature.

Thermal energy is heat; heat is just a shorter way of saying thermal energy. Some units include J. However, temperature is a measure of thermal energy. Units include C, K, F, etc.

Explanation:

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j