A man is driving his SUV with speed 51.0 mi/h on a horizontal stretch of road. (a) When the road is wet, the coefficient of static friction between the road and the tires is 0.104. Find the minimum stopping distance (in m).  m (b) When the road is dry,  μs = 0.596.  Find the minimum stopping distance (in m).  m

If the coefficient of kinetic friction between an object with mass M = 3.00 kg and a flat surface is 4 =0.410, what force will cause the object to accelerate at 2.50 m/s? The force is applied at an angle of 0 = 30.0* (see the figure below). M Hk F = ? 1) Calculate the force. N Submit

If the coefficient of kinetic friction between tires and dry pavement is 0.800, what is the shortest distance in which an automobile can be stopped by locking the brakes when traveling at 25.4 m/s ? Express your answer in meters. 220 = VD ΑΣΦ ? m

A student applies a 100 N force at an angle 30° below the horizontal to a block causing the block to move at a constant speed along a level ground. Which statement regarding the kinetic friction on the block is most accurate? 100 N 30 The kinetic friction force is negligible and can be rounded to 0 N. The kinetic friction force is equal to 100 N. The kinetic friction force is greater than 100 N. The kinetic friction force is less than 100 N. O O O O

Part of a roller-coaster ride involves coasting down an incline and entering a loop 7.30 m in diameter. For safety considerations, the roller coaster's speed at the top of the loop must be such that the force of the seat on a rider is equal in magnitude to the rider's weight. From what height above the bottom of the loop must the roller coaster descend to satisfy this requirement? m

An automobile is going up a grade of 15 with an initial velocity of 30 m/s. The coefficient of static friction between the tires and the road is 0.7. a) What minimum distance does it take to stop the car? b) What minimum distance would it take to stop the car if it were going down the grade?

m A 17.8 kg block is released from rest on a 32° incline. It takes 3.29 seconds to slide 1.66 meters along the ramp. Find the weight of the block. Fg = N Find the acceleration of the block. a = m/s? Find the Normal Force. FN = %3D Find the friction. Ff = N Find the coefficient of friction. µ =

A block accelerates down a ramp at an angle θ=32° with a friction coefficient of 0.15.  Determine the acceleration.

A crate slides down a ramp 24.37 m long inclined at 25.71°. How long will it take to reach the end of the ramp? What is the velocity of the crate upon reaching the end of the ramp? Assume coefficient of kinetic friction = 0.079 .

5. A box can be moved up an inclined plane with constant velocity by a force of magnitude F1 or down the inclined plane with constant velocity by a force of magnitude F2. Find the coefficient of friction u between the box and the inclined plane. It holds that F1 = 6F2 and both forces are parallel with the inclined plane. The angle a between the inclined plane and the horizontal plane is 15°. a a