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

Calculate the gain or loss percent for CP = Rs.4500 and SP = Rs.5175.
When factorising a quadratic, which number is a negative If I had x^2+5x-14=0 I know I need 2 and 7 but which one needs to be negative?
how do you think human induced disaster is different from natural disaster​
Solve the equation v^3=80
On a viased dice the probability of getting a 1 is 3.0 The dice is rolled 150 times how many ones do u expect to roll?
Please help 10 points
The expression x+y+10+2y simplifies to x + 2y2 + 10 true or false for 100 points
Please tell me in order which one is greatest and which one is the least I need it at least the greatest please hurry up
find the perfect square of 57600​
Chargaffs tule states