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

a pelican flies at a speed of 52 km/h for 0.25 hours . how many miles does the pelican travel ? the conversion factor is 1.6 km/h = 1.0 mph
The weight of an object on the moon is 1/6 it's weight on Earth. Write 1/6 as a decimal.
One month, Jon worked 3 hours less than Chaya, and Amgelica worked 4 hours more than Chaya. Together they worked 196 hours. Find the number of hours each person
what is the estimate of 19% of $53
If a store advertised a sale that gave customers a 1/4 discount,what is the fractional part of the original price that the customers will pay?
2+d=2-3(d-5)-2 Pls show work
An internal force that helps create new landforms is a. mechanical weathering. c. volcanism. b. glacial movement. d. wind erosion.
what is Florida's archipelago
the unit cm3 is used to express .?
what is 0.008 as a percent