Question
2. A car uses the most energy when a. it's stopped. b. it's traveling at a steady speed. c. it's accelerating. d. it's braking.
Answer
3.5
(225 Votes)
Pryderi
Professional · Tutor for 6 years
Answer
C
Explanation
A car uses energy during different parts of its lifecycle. When a car is stopped, it typically expends minimal energy because there's no need to change position or actions, aside from maintaining electricity for systems like the car's internal systems.When driving at a steady speed, energy usage is considerable but generally steady. At this point, the car has already overcome the forces resisting its movement like friction and air resistance and just needs to spend enough energy to maintain its present motion.When a car is accelerating, it uses the most energy. To increase speed from a stagnant or consistent speed, additional force must be exercised to achieve this. Also, The100% of gas you’ve burnt towards escaping the inertia and fighting the external resistances contributing to achieve the increment/min change in the cars motion. So acceleration phase consume tons of fuel/energy – this is release, and it pushes the pistons down.When braking, an active amount of energy is used to transform kinetic energy (movement) into heat. However typically borrowing an electric car, the majority of energy is lost, as conventional brakes don't mechanically recover and save energy.