Asked by Robert C
A car can go from 0 - 60mi/h in 3 seconds during free fall. How long will it take for this same car to go from 0 - 4 mi/h?
This is hypothetical situation.
The answer I have come up with is 0.2 seconds but my homeowrk system says it is not correct. Is there any reason this should be incorrect?
This is hypothetical situation.
The answer I have come up with is 0.2 seconds but my homeowrk system says it is not correct. Is there any reason this should be incorrect?
Answers
Answered by
MathMate
Since it is a free-fall, assuming no air resistance, the velocity increases uniformly with time.
For a free-fall, it would have taken 2.74 seconds with g=9.8 m/s².
On that basis, I get 0.18 seconds for 0-4 mph. However, based on 3 seconds for 0-60, I get also 0.2 s.
I am also curious to know what homework system do you use.
For a free-fall, it would have taken 2.74 seconds with g=9.8 m/s².
On that basis, I get 0.18 seconds for 0-4 mph. However, based on 3 seconds for 0-60, I get also 0.2 s.
I am also curious to know what homework system do you use.
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