Highway engineers want to improve a dangerous stretch of highway. they expect that it will reduce the risk of someone dying in an accident from 5.3 percent to 2.1 percent over the life of the highway. if a human life is worth $10 million, then the project is worth doing as long as it does not cost more than a. $2.1 million. b. $210,000. c. $53,000.

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.