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Homework Statement
22. The average person passes out an
acceleration of 7g (that is, seven times the
gravitational acceleration on Earth).
Suppose a car is designed to accelerate at
this rate. How much time would be
required for the car to accelerate from rest
to 60.0 miles per hour? (The car would need
rocket boosters!)
Homework Equations
The Attempt at a Solution
v1 = 60
v0 = 0
a = 7 * 9.8 => 68.6m/s^2
a = change in velocity/change in time
So, 68.6m/s^2 = 60mph/t
68.6 * t = 60mpg
t = 60/68.6
= 0.87 seconds
I am not sure if this is correct or not.
The answer seems within reason since a very high powered sports car accelerates from 0-60 miles per hour in around 3 seconds, so 0.87 seconds would line up well with the exaggeration of the speed of the car mentioned at the end of the word problem.
Any help is appreciated :).