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 is the shape of the poem pares conected to its mening
Which of the following rational functions is graphed below?
What was the Oseberg ship used for? a.a grave ship b.a warship c.for cargo d.none of these
Consider a 400 mL solution of 0.10 M \ce{NaOH}NaOH. Calculate the mass of solid \ce{NaOH}NaOH required to achieve this solution.
D major on treble clef scale
what does big bang theory tells us about space
can i get some help with this pls
Write a letter to yourself at a specific point in your past. What do you tell yourself about how things are going for you now? What questions do you answer for
An identifiable problem, situation, or opportunity that requires a person to choose between actions that may be evaluated as ethical or unethical is referred to
help 6th grade mathhhhhhhhhhhhhhh