A Particle moves along the x-axis according to the expression x = 3t2 – 2t. Where x is in m and t is in s (a) What is the displacement of the particle in the time intervals t = 0 to t = 1 s and t = 1 s to t = 4 s?
(b) Calculate the average velocity for the time interval in (a). (c) Find the instantaneous velocity of the particle at t = 3 sec.

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281