taylorleeanneho taylorleeanneho

09-08-2016
Physics

contestada

An 1800kg car is traveling on an elevated roadway 5.0 meters above the ground. If the car is moving at 20 m/s, what is the total mechanical energy of the system?

Respuesta :

Hanibal Hanibal

11-08-2016

We know that:
EM=Ek+Epg
SO:
Ek=1/2mv²
Ek=1/2(1800kg)(20m/s)²
Ek=360000J
Now:
Epg=mgh
Epg=(1800kg)(9,81m/s²)(5m)
Epg=88290J
We sum:
EM=360000J+88290J
EM=448290J

Answer Link

Otras preguntas

PLEASE HELP!! ITS URGENT!! Find all solutions to the equation 3 cos (5t) + 3 = 2 in the interval ㅠ 0≤t≤ radians. a) 0.3821, 0.2462, 0.8745 b) 0.654 c) 0.3821, 0

If y = –0.96 when x = 2.4, what is y when x = 2.9?

Match the vocabulary words to the correct definitions. Drag the vocabulary words on the right-hand side of the screen to the definitions with which they match.

How many cups are there in 3/8 gallon?

Which of these is true about analog signals? 1. They can capture the entire sound wave when a song is recorded on a vinyl record, resulting in a Fuller and more

Which option below demonstrates the correct interval notation for a continuous set of all numbers between 5 and 6, including 5, but not including 6? OA. (5,6] O

Definition Unjustly harsh, domineering. Usage Often, when one person rules, governments become oppressive since the person in power does not want to lose it.

Read the excerpt from "Daughter of Invention". But Laura's inventing days were over just as Yoyo's were starting up with her school-wide success. Rather than th

The green areas on the map above highlight the world regions with Please select the best answer from the choices provided climates.

En 100 most, ecrivez une lettre a vorte ami en invitant a votre marrage