2200 kg car is driving down a highway at a constant velocity when a deer jumps out onto the road 50.5 m ahead. The coefficient of friction between the car tires and the road is 0.29.  Calculate the initial velocity of the car if it is able to stop just before hitting the deer. (You do not need to account for reaction time of the driver. Assuming the car is breaking the entire 50.5 m distance and that friction is the only force stopping the car.) v0 =          m/s

The coefficient of friction between the wheels of Yamaha motorcycle and the dry pavement is 0.79. An animal walks out into the road, causing a motorcyclist to slam on the brakes. The wheels stop turning, but the tires skid along the road, causing intense friction and heat. Determine the magnitude (positive) of the acceleration which the 217-kg motorcycle experiences while skidding to a stop. The mass includes the rider. Answer: m/s/s (or m/s²)

A ball of mass m is shot straight up into the air with an initial speed vj. (a) What is the maximum height reached by the ball (in terms of vj and g)? (b) A second ball is dropped from rest from a height, h, directly above the first ball, and is released at the same time that the first ball is shot upwards. At what height will the two balls collide? Provide an expression in terms of h, Vị, and g. (c) From what height should the second ball be dropped from so that the two balls collide when the first ball is at its maximum height?

A truck with mass m has a brake failure while going down an icy mountain road of constant downward slope angle alfa (see figure). Initially the truck is moving downhill at speed v0. After sliding downhill a distance L with negligible friction, the truck driver steers the runaway vehicle onto a runaway truck ramp of constant upward slope angle beta. The truck ramp has a soft sand surface for which the coefficient of rolling friction is f. After an unknown distance D along the ramp the truck comes to a halt. The acceleration of gravity is g. What is the total work Wf done by the friction force on the runway ramp?

Suppose that the coefficient of kinetic friction between Zak's feet and the floor, while wearing socks, is 0.250. Knowing this, Zak decides to get a running start and then slide across the floor.   If Zak's speed is 3.00 m/sm/s when he starts to slide, what distance ddd will he slide before stopping? Use 9.81 m/s2m/s2 for the acceleration due to gravity.

Flying Circus of Physics A man of mass 71 kg drops to a concrete patio from a window 1.2 m above the patio. He neglects to bend his knees on landing, taking 2.8 cm to stop. (a) What is his average acceleration from when his feet first touch the patio to when he stops? (b) What is the magnitude of the average stopping force exerted on him by the patio? (a) Number 420.04 (b) Number i 29822.8 Units Units m/s^2 N

A 5.8-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 2.1 m/s to the right. The coefficient of friction between the pond and the toboggan is 0.18. Determine the distance that the toboggan slides before coming to rest. Answer: m (round to the nearest hundredth)

A semi is traveling down the highway at a velocity of v = 27.5 m/s. The driver observes a wreck ahead, locks his brakes, and begins to slide. The truck has mass m and a coefficient of kinetic friction between the tires and the road of μk = 0.16. Write an expression for the sum of the forces in the x-direction for the truck while braking? Using the results from Part (a), input an expression for the truck's acceleration, at, while breaking?

A semi is traveling down the highway at a velocity of v = 27.5 m/s. The driver observes a wreck ahead, locks his brakes, and begins to slide. The truck has mass m and a coefficient of kinetic friction between the tires and the road of μk = 0.16. Write an expression for the sum of the forces in the x-direction for the truck while braking? Using the results from Part (a), input an expression for the truck's acceleration, at, while breaking? What is the magnitude of the acceleration in m/s2?  How far does the truck travel, d in meters, before stopping?

Problem 6: Determine the velocity of the 100-kg block A if the two blocks are released from rest and the 50-kg block B moves 0.5 m up the incline. The coefficient of kinetic friction between block A and the inclined plane is μk = 0.10 while the coefficient of kinetic friction between block B and the plane is μ = 0.20 60⁰ 30° B