Question

Example 3.4: The position vectors of three
particles are given by
x1 = (5i +5j) m, x2 = (5tî +5t j) m and
x3= (5t î+10t^2j)m as a function of time t.
Determine the velocity and acceleration for each, in SI unit.​

Answer 1

Answer:

Internal energy is NOT all the energy in the system, it is the kinetic and potential energy associated with the random motion of the molecules of an object. If you heat an object, you will increase its internal energy.