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(a) What is the kinetic energy in joules of a 1140-kg automobile traveling at 89 km/h?


(b) How much work would have to be done to bring a 1140-kg automobile traveling at 89 km/h to a stop?
 

 Oct 29, 2021
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89 km / hr =  24.72 m/s

 

a)  1/2 m v^2 =   1/2 ( 1140) (24.72)2  joules

 

b)   same as answer  a)  

 Oct 29, 2021

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