SOLUTION: Suppose a car's brakes can produce an acceleration of –7 m/s2. If the car is traveling at an initial speed of 28 m/s, what is the minimum distance necessary to stop the car?
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Question 675140: Suppose a car's brakes can produce an acceleration of –7 m/s2. If the car is traveling at an initial speed of 28 m/s, what is the minimum distance necessary to stop the car?
Answer by sachi(548) (Show Source): You can put this solution on YOUR website!
use the formula
v^2-u^2=2as
where v= final speed=0
u=initial speed= 28 m/s
a = accln=-7 m/s2
so 0-28^2=-2*7*s
or s=28*28/14=56 m
ans
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