Calculate the maximum deceleration of a car that is heading down a 30.0° slope (one that makes
an angle of 30° with the horizontal) under the following road conditions. You may assume that the
weight of the car is evenly distributed on all four tires and that the coefficient of static friction is
involved—that is, the tires are not allowed to slip during the deceleration. Calculate for a car:
(a) On dry concrete. (b) On wet concrete. (c) On ice, assuming that μs = 0.100, the same as for
shoes on ice. (The last answer will be positive; this means that you can't stop the car, you can only
reduce the downhill acceleration.)