What is the speed of the automobile after 1.22 s have elapsed?


Posted March 24th, 2010 by admin 1 Comment »
automobile
Mariah asked:


Traveling at a speed of 13.3 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.650. What is the speed of the automobile after 1.22 s have elapsed? Ignore the effects of air resistance.

What minimum coefficient of kinetic friction is required to stop the automobile before it hits the barrier?


Posted February 20th, 2010 by admin 1 Comment »
automobile
mariangel_blasini asked:


An automobile approaches a barrier at a speed of 20 m/s along a level road. The driver locks the brakes at a distance of 50m from the barrier.

What is the magnitude of the work done stopping the car?


Posted January 21st, 2010 by admin 2 Comments »
car
TmanBaller7 asked:


A car and driver weighing 7330 N passes a sign stating “Bridge Out 29.8 m Ahead.” She slams on the brakes, and the car decelerates at a constant rate of 14.9 m/s2 .
The acceleration of gravity is 9.8 m/s2 . What is the magnitude of the work done stopping the car if the car just stops in time to avoid diving into the water?
Answer in units of J.

What is the deceleration of a car on a flat street if the driver brakes sharply?


Posted November 1st, 2009 by admin 1 Comment »
car
Fggfg asked:


Suppose that the coefficient of kinetic friction of the rubber of a car tire and the street is = 0.8 k μ . What is the deceleration of a car on a flat street if the driver brakes sharply, so all the wheels are locked and skidding?

How do you stop your car if you run out of brake fluid?


Posted May 14th, 2009 by admin 21 Comments »
car
Cool =) Guy asked:


If the car runs out of brake fluid and the brakes dont work can you use the handbrake (E brake) to stop the car?

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