A bus traveling with a velocity is 30ms-1 accelerates uniformly at the rate of 10ms-1 until it attains a velocity of 50ms-1, draw a velocity time graph for this motion and calculate the, a. Distance covered within this period. b. Total time taken.​

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?