On a level road the stopping distance for a certain car traveling at 80 km/hr is 32 m. what would be the stopping distance for a car when going down a hill on a 1 : 10 grade? (A grade of 1 : 10 means the elevation drops 1 m for a forward travel of 10 m along the roadway.)

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