tahjzionhogan8751 tahjzionhogan8751
  • 04-04-2018
  • Physics
contestada

It takes 160 kj of work to accelerate a car from 24.0 m/s to 27.5 m/s. what is the car's mass?

Respuesta :

kiaratatiana7p6mdlk
kiaratatiana7p6mdlk kiaratatiana7p6mdlk
  • 08-04-2018
Work-Energy :W = 1/2 m ( Vf^2 -Vo^2 )
Vo = 24.0 m/s Initial speed 
 Vf = 27.5 m/s  Final speed 

W = 1/2 m ( Vf^2 -Vo^2 )
160 kj = 1/ 2 m ( 27.5^2  -24.0 ^2)
160kj =  4680 x m
convert kilo joules to jeoules                     160000 j = 4689 xm
m = 160000 j/4689
m = 34.18 kg
Answer Link

Otras preguntas

How does the moon's interior differ from earths​
How is the medium made that is used for each technique?​
Hellllppppp if you awnser u are clever
quadrilateral abcd had side lengths of AB= 3, bc=4y-5, Cd=3, and AD=2y+1. Find the value of y for which quadrilateral abcd is a parallelogram.​
What was the result of the battle of Tippacanoe
Please help! A rhombus has sides (2y+3) cm and (9—y) cm. Find y and, from this, the perimeter of the rhombus.
under what condition does a business make a profit?
y=|x−5|+|x+5|, if x>5
During an experiment a scientist observed prokaryotes that lived near volcanic vents deep in the ocean the scientist most likely observed A. Photoautotrophs B
FIRST ANSWER = BRAINLIEST​