Acar is traveling with constant velocity along a highway. the driver notices he is late for work, so he stomps down on the gas pedal and the car begins to speed up. the car has just achieved double its initial velocity when the driver spots a police officer behind him and applies the brakes. the car then slows down, coming to rest at a stoplight ahead. draw a complete motion diagram for this situation.
part a
the car’s motion can be divided into three different stages: its motion before the driver realizes he’s late, its motion after the driver hits the gas (but before he sees the police car), and its motion after the driver sees the police car. which of the following simplifying assumptions is it reasonable to make in this problem?
a. during each of the three different stages of its motion, the car is moving with constant acceleration.
b. during each of the three different stages of its motion, the car is moving with constant velocity.
c. the highway is straight (i. e., there are no curves).
d. the highway is level (i. e., there are no hills or valleys).

c)

Explanation:

The highway is straight(i.e., there are no curves). If there is no curves in the path then it will be easier to study the motion of car.

Curves may include other forces like centripetal force which can make calculations more difficult.

Let car run with constant velocity for time , accelerate for time , decelerate for time

so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water

lol

explanation: