Question

the circumference of the base of a cylindrical object is 2.2m and height 40 cm,find the area of the total surface of the object?​

Answer 1

Step-by-step explanation:

A passenger is traveling in a train moving at 72 km/ h. His suitcase is kept on the berth.The driver of the train applies brakes such that the speed of the train decreases at a constant rate of 36 km/h in 5 second. What should be the minimum coefficient of friction between the suitcase and the berth if the suitcase is not to slide during retardation of the train?