You are driving your 1450-kg car on a straight highway at 67 mph when a deer jumps out into the middle of the road in front of your car. You have a quick reaction time of 0.60 seconds before applying the brakes which slow your car for 2.36 seconds before you enter a skid. Your car then skids for 39.4 m before coming to a stop. Assuming a coefficient of kinetic friction between the tires and the road of 0.45, find (a) the acceleration rate you had while the brakes were applied prior to the skid, (b) the total distance the car traveled from the moment the deer jumped to when the car stopped,  (c) the work done by the brakes, and the work done by friction during the skid.

Q: A truck with a mass of 750 kg is traveling along a wet road at 30.0 m/s  The driver slams on the…

A: The mass of a truck is, m=750 kg The truck will stop by applying brakes, so the final velocity of…

Q: Consider the system of two crates shown below, which are tethered to each other by a massless…

A: Solution: given that m1 = 35 kg m2 = 60 kg L = 22 m angle = 31.7 degrees coeff of kinetic friction =…

Q: 2200 kg car is driving down a highway at a constant velocity when a deer jumps out onto the road…

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Q: Traveling at a speed of 12.1 m/s, the driver of an automobile suddenly locks the wheels by slamming…

A:

Q: A light plane of mass 1200 kg makes an emergency landing on a short runway. With its engine off, it…

A: Given:  Mass of plane, mp= 1200 kg Mass of sandbag, ms=130 kg Initial speed of plane, vp,i=35 m/s…

Q: A boy of mass 40.0 kg is sledding down a 70.0-m slope starting from rest. The slope is angled at…

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Q: Starting at t = 0 a net external force in the +x-direction is applied to an object that has mass…

A: The straight-line equation of Force v/s time with slope 3.00 N/s graph is given as, but the force…

Q: A hockey puck having initial speed of 3.8 m/s comes to rest after a distance of 7.6 m. What is the…

A:

Q: A 10 kg-block moves on a smooth horizontal surface with a speed of 10 m/s and slides into another…

A: Given data: Mass = 10 kg Initial speed = 10 m/s Coefficient of friction = 0.25 Need to determine the…

Q: The coefficient of friction between the tires of Shirley's 1985 Ford Coupe and the dry pavement is…

A:

Q: Traveling at a speed of 12.2 m/s, the driver of an automobile suddenly locks the wheels by slamming…

A: An automobile puts on brakes and it is asked to find the speed of the automobile after 1.41 s.

Q: Two boxes (m = 0.500 kg and M = 1.00 kg) are sliding down a rough incline. The coefficient of…

A:

Q: Traveling at a speed of 14.2 m/s, the driver of an automobile suddenly locks the wheels by slamming…

A: Given that: u=14.2 m/sv=?μ=0.59t=1.14 secg=9.8 m/s2

Q: Two penguins, Wheezy and Mumble, are racing down an icy slope into the water below.  Wheezy has a…

A: The coefficient of friction μ=0.12 The angle of inclination θ=80 The free body diagram of the…

Q: You have been called to testify as an expert witness in a trial involving a head-on collision. Car A…

A: Car A has a weight m1=1515 lb and is travelling with a velocity say v1 towards east. Car B has a…

Q: At a certain factory, 300 kg crates are dropped vertically from a packing machine onto a conveyor…

A:

Q: running

A: When the two bodies move over one another then there is friction between them. The static friction…

Q: You have been called to testify as an expert witness in a trial involving a head-on collision. Car A…

A: Given,  Weight of car A =1515 lb Weight of car B= 1125 lb Car A is travelling eastward and car B is…

Q: You have been called to testify as an expert witness in a trial involving a head-on collision. Car A…

A: This can be solved by using the conservation of linear momentum just after the collision, and then…

Q: At night while it is dark, a driver inadvertently parks his car on a drawbridge. Some time later,…

A: GivenCoefficient of state friction         μs Coefficient of kinetic friction        μk =0.470.

Q: A hockey puck is hit on a frozen lake and starts moving with a speed of 15.0 m/s. If the coefficient…

A: initial velocity, u = 15 m/s  friction coefficient, μk =  0.2  time, t = 5 s

Q: Brake or turn? The figure depicts an overhead view of a car's path as the car travels toward a wall.…

A:

Q: While hauling a log in the back of a flatbed truck, a driver is pulled over by the state police.…

A:

Q: A 2110 kg car traveling at 8.4 m/s collides with a 2730kg car that is initially at rest at the…

A: Mass of first car = m = 2110 kg Mass of second car = M = 2730 kg Distance traveled = s = 3.3 m…

Q: The 0.20-kg particle has a speed v = 10.4 m/s as it passes the position shown. The coefficient of…

A:

Q: You have been called to testify as an expert witness in a trial involving a head-on collision. Car A…

A:

Q: You have been called to testify as an expert witness in a trial involving a head-on collision. Car A…

A: The collision of the cars is an inelastic collision as the cars get locked into each other. Let the…

Q: You have been called to testify as an expert witness in a trial involving a head-on collision. Car A…

A: The weight of car A, WA=1515 lb The weight of car B, WB=1125 lb Speed of car B, vB=46.0 mph=67.47…

Q: coefficient of friction between the tires of Shirley's 1985 Ford Coupe and the dry pavement is 0.71.…

A:

Q: A car is being driven along a country road on a dark and stormy night at a speed of 14 m/s. The…

A: Given information: The initial velocity of the car, u=14 m/s The distance from the tree where the…

Q: An airplane of mass 3.60 x 10° kg experienced problem in all its tyres when it was about to touch…

A: Mass of the airplane, M = 3.60 x 105 kg Displacement of airplane, d = 728 m Coefficient of Kinetic…

Q: A hockey puck on a frozen pond is given an initial speed of 20 m/s. If the puck always remains on…

A: Using kinematics equation, v2=u2+2asa=v2-u22s Use the given values, a=0-20 m/s22115 m=-1.74 m/s2

Q: A hockey puck having initial speed of 2.5 m/s comes to rest after a distance of 8.0 m. What is the…

A:

Q: A 2234 kg car is traveling at 30.0 m/s on a flat surface. It encounters an incline angled at 15…

A:

Q: You have been called to testify as an expert witness in a trial involving a head-on collision. Car A…

A: From conservation of energy,

Q: A truck is traveling at 11.6 m/s down a hill when the brakes on all four wheels lock. The hill makes…

A: The given data are: u=11.6 m/s=Initial velocityθ=17°=inclination of a hillμ=0.876=coefficient of…

Q: You are lowering two boxes, one on top of the other, down the ramp shown in the figure by pulling on…

A:

Q: A packing crate with mass 80.0 kg is at rest on a horizontal, frictionless surface. At t = 0 a net…

A:

Q: ou go trick-or-treating with your friends and end up with more candy than you know what to do with.…

A: The magnitude of normal force acting on the bag  is, FN=mg-Fsinθ=8.7 kg9.8 m/s2-62 Nsin57°=33.3 N…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: