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.

d is the answer i came up with

b.a device that inputs heat into a cool object

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.