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

Which of the following is a composite number that is divisible by both 3 and 5?A.116B.135C.1025D.1546
Describe the energy transformation that occurs in a digital clock?
LatinQui vir, qui te amat, tuam sororem osculat?can someone please give me the english translation?
at what temperature would 250mL of water boils? 1000mL? is the boiling point an intensive or extensive property? explain.
The perimeter of the square shown is 4(x+33) meters. What is the value of x if the perimeter is 28 meters
A food handler has finished grilling a chicken breast for a sandwich. what should the food handler do before touching the chicken lettuce tomato and bun?
In the southern hemisphere about ________ percent of the surface is land. 55 .019 19 1.9 78
The ________ is the first relay station for gustatory information arising from the tongue.
How do i convert five and one sixth into a (terminating or repeating) decimal
There are 10 apples in the fridge and 2 of them are bad. if you grab 3 apples, what is the expected number of bad apples