A ball is dropped from a height of 10 m. It strikes the ground and rebounds to a height of 2.5 m. During the collision, the per cent loss of kinetic energy is:
Pipe A can empty a filled tank in 28 hours while Pipe B can fill the same tank, when empty, in 35 hours. If alternately Pipes A and B are turned on for an hour each time, starting when the tank is full, how long will it take to empty the tank?
Consider the given argument and decide which of the given assumptions is (are) implicit in the argument.
Argument:
Due of IT recession, many software engineers lost their job.
Assumptions:
1. IT sector jobs are not secure.
2. IT sector companies lay off software engineers quite often.