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

18 mph on a bike after 5 hours how far will she have traveled
PLZZZZZZZZZZZZZZZZZZ HELP ASAP WILL GIVE BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Brutus is a sweet dog who loves to be patted. Which
a discount voucher offering 15% off is used to pay a bill. after using the voucher the bill is reduced to 36.72. how much was the bill before applying the vouch
help!! attached photo
Which expression is equivalent to the expression shown? HELP ASAP
Choose the equation that represents the graph below: (1 point) Graph of a line passing through points 0 comma 6 and 9 comma 0 y = −2x − 6 y = two thirds
can someone help me plzzz... essay about global warming..and thank u guys
CAN SOMEONE HELP ME PLEASEEE !
Sodium and potassium ions can diffuse across the plasma membranes of all cells because of the presence of what type of channel? a.Sodium-potassium ATPases b.Lig
160 pounds to kilograms