Afeather is dropped on the moon from a height of 2.0 meters. the acceleration of gravity on the moon is 1.67 m/s2 . determine the time for the feather to fall to the surface of the moon. hint: always ask yourself if you have a zero velocity which might allow you to ignore a part of the formula. round to the hundredths place (2 after the decimal), and choose the correct unit.

A75-hp (shaft output) motor that has an efficiency of 91.0 percent is worn out and is to be replaced by a high-efficiency motor that has an efficiency of 95.4 percent. the motor operates 4368 hours a year at a load factor of 0.75. taking the cost of electricity to be $0.12/kwh, determine the amount of energy and money saved as a result of installing the high-efficiency motor instead of the standard motor. also, determine the simple payback period if the pu