Posted by heather on Sunday, February 27, 2011 at 12:58pm.
It takes 214 kJ of work to accelerate a car from 23.1 m/s to 29.3 m/s. What is the car's mass?

physics  drwls, Sunday, February 27, 2011 at 1:12pm
Work = 214,000 J
= difference in kinetic energy.
= (M/2)(V2^2  V1^2)
Solve for M (in kg)

physics  heather, Monday, February 28, 2011 at 11:43am
so would it be 1/2(29.323.1)/214000
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