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Original Question
It takes 228 kJ of work to accelerate a car from 22.3 m/s to 29.2 m/s. What is the car's mass?Asked by iamstupid
It takes 242 kJ of work to accelerate a car from 20.2 m/s to 28.2 m/s. What is the car's mass?
Answers
Answered by
William
change in KE = 1/2 mv2^2 - 1/2mv1^2 = 1/2m(v2^2-v1^2)
where v2 and v1 are the final and initial speeds
242 = KE
plug in numbers to get ans(mass) :D
where v2 and v1 are the final and initial speeds
242 = KE
plug in numbers to get ans(mass) :D
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