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

As in Hawthorne's "Young Goodman Brown," the autobiography story of Sojourner Truth is written on all levels, except
Under what operations is the system of polynomials NOT closed? A. Addition B. Subtraction C. Multiplication D. Division
product is related to components as sentence is related to:
Which is least likely to be impacted by runoff from a factory?
What expression is equivalent to 4.8+2.2w-1.4w+2.4
a computerized spreadsheet program is useful for
Which "spheres" are interacting when water evaporates from plants
In the following sentence, identify the part of speech of the italicized word. Thousands of years ago, fish were caught in nets and traps. a. Conjunction b. P
What do the North Star and The Liberator have in common?
Which factor is a measure of the oxygen in a body of water? A. temperature B. dissolved oxygen C. pH D. turbidity