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

sam cut a pie into equal parts.There are 3 slices left.The angle measures for 3 slices is 72.how many slices did he cut?
Which of the following is formed at a collision zone?Continental rift valleyVolcanic island chainMountain rangeDeep-ocean trench
a soccer team played 160 games and won 65% of them. how many did they win?
There is an inverse relationship between x and y. If y is when x is 3, what is x when y is 9? 3 5
Newtons third law of motion is also known as the law of ?
The gases in the air attracted to earth by gravity form layers called the ____
how might a scientist a determine  whether trait sex-linked by observing the offspring of several genetic crosses
how is the expression of sex linked genes both  similar to and different from the expression of autosomal genes?
a soccer team played 160 games and won 65% of them. how many did they win?
How did the depression affect women and children?