You have been hired as an expert witness in a court caseinvolving an automobile accident. The accident involvedcar A of mass 1500 kg which crashed into stationary car Bof mass 1100 kg. The driver of car A applied his brakes15 m before he skidded and crashed into car B. After thecollision, car A slid 18 m while car B slid 30 m. The coefficient of kinetic friction between the locked wheels and the road was measured to be 0.60. Show that the driver of car A was exceeding the 55 mi/h (90km/h) speed limit before applying the brakes.

Q: The front 1.20 m of a 1550 kg car is designed as a "crumple zone" that collapses to absorb the shock…

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Q: A car of mass 910 kg coasts on a level road, starting with an initial speed of 16.1 m/s and coming…

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Q: -kg Dail rebounds upward, reaching between Dail and ground lasted 2.4 ms, what average force was…

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Q: A baseball pitcher throws a ball straight up into the air at a speed of 21.5 m/s. In the process, he…

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Q: Monkey D. Luffy is sailing together with his crew, the “Straw Hat Pirates” in the West Philippine…

A: Let us first define the coordinates and its directions as: North = +j East = +i West = -i South =-j…

Q: Starting from rest, a 63.0 kg woman jumps down to the floor from a helght of 0.660 m, and…

A: Hai, since there are multiple sub parts posted, we will answer the first three sub parts. (a) The…

Q: The path of motion of a 0.5 kg particle in the horizontal plane is described in terms of polar…

A: The radial coordinate is given as, r=5t-1drdt=5d2rdt2=0 The angular coordinate is given as,…

Q: A barefoot field-goal kicker imparts a speed of 44 m/s to a football initially at rest. If the…

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Q: (b) A block of mass 3.00 kg is moving in the positive x direction, across a rough surface (UK-0.11)…

A: The dissipative forces are the normal forces. They only use the enrgy from the system but does not…

Q: Monkey D. Luffy is sailing together with his crew, the “Straw Hat Pirates” in the West Philippine…

A: According to the Newton's second law  Net force = mass x acceleration

Q: Your friend’s car has broken down, so you volunteer to push it with your own car to the nearest…

A: There is multiple sub parts i will solve the first part

Q: By pulling on a rope attached to the box, a clerk moves an Oreo crate with a mass of m down an aisle…

A: Consider the case when the box pulled at an upward angle and draw the free body diagram.

Q: A car of mass 975 kg coasts on a level road, starting with an initial speed of 15.0 m/s and coming…

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Q: A light train made of two cars travels at 72 km/h. The mass of car Ais 18 Mg and the mass of car 8is…

A: a) Apply Newton’s second equation of motion to calculate the acceleration. Apply the first…

Q: A 6.3-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 1.9 m/s to the right.…

A: Given: Suppose distance travel = d Mass of the toboggan, m= 6.3 kg Initial velocity, u= 1.9 m/s…

Q: The positon vector r of a particle of mass 2 kg at time / seconds is given by r= [(2 sin 2t) i + (1…

A: Given: Mass, m = 2 kg Position vector, r = [(2 sin 2t)i + (1-cos 2t)j ] m (a)    velocity is the…

Q: A freight train consists of a 8.31E+05-kg engine car followed by 51 cars, each with a mass equal to…

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Q: A block of mass m, = 15.4 kg is on a frictionless table to the left of a second block of mass m.…

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Q: After falling from rest from a height of 29 m, a 0.40-kg ball rebounds upward, reaching a height of…

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Q: Three blocks m1=8.00 kg, m2=6.00 kg and m3 are connected by massless strings that pass over…

A: m1=8kg ,  m2=6kg  m3 us=0.155, uk=0.133 m2 ascends 1.2m/s2

Q: A car moving at 9.500 m/s crashes into a tree and stops in 0.2600 s. Calculate the magnitude of the…

A: Given Data:- Initial speed of the car is vi=9.500 m/s. Final speed of the car is vf=0 Time taken by…

Q: How much force must the person apply to the suitcase to get it to start sliding? Find anequation…

A: mass of suitcasem=20 kgcoefficient of static frictionμ=0.30coefficient of kinetic…

Q: A 5.1-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 1.8 m/s to the right.…

A: Given: The mass of the toboggan is 5.1 kg. The initial speed of the toboggan is 1.8 m/s in the right…

Q: A motorcycle racer traveling at 175 km/h loses control in a corner of the track and slides across…

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Q: A soccer player kicks a soccer ball of mass 0.45 kg that is initially at rest. The player's foot is…

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Q: The front 1.20 m of a L00-g car is designed asa "onumple zone that colapnes to absorb e shock ofa…

A: (a) The relation between displacement, average velocity and time is, Here, represents final…

Q: A block of mass 6.00 kg is pushed up against a wall by a force P that makes a 50.0° angle with the…

A: Given: The mass of the object is 6 kg. The static coefficient of the friction is 0.5. The angle of…

Q: While skydiving, a brilliant young physics student known affectionately as “Crazy Kaitlin” launches…

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Q: Two blocks of mass M and M2 are connected by a massless string that passes over a massless pulley as…

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Q: Three forces act concurrrently on a body. Force A has a magnitude of 200N and points 50° N of W;…

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Q: 3.09 kg mass is initially at rest while upon a frictionless, horizontal surface. An  applied force…

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Q: Two blocks rest on frictionless inclines  and are connected by a lightweight string that passes over…

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Q: A body of mass 2 kg moving on a horizontal surface with an initial velocity of 4 m/s comes to rest…

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Q: A 0,160-kg hockey puck is moving on an icy, frictionless, horizontal surface, At t = 0, the puck is…

A: The net force is given by  F = m a  The first equation of motion is  v = u + at  where, m is the…

Q: A force of 20 N acts on an initially stationary object with a mass of 2000g. What is the velovity of…

A: SOlution: given that F = 20 N m = 2 kg t = 9.5 s

Q: Find the magnitude of force.

A: Given; A force acts for,  t= 0.1 sec mass,m=2 kgVelocity,v=2 m/sFind magnitude of force ?

Q: constant horizontal force of 36 N pushes a 10 kg-mass through a medium that resists its motion with…

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Q: A constant retarding force of 50 N is applied to a body of mass 20 kg moving initially with a speed…

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Q: A dog and a sledge are on the frictionless ice of a frozen lake, 11.6 m apart but connected by a…

A: The acceleration of the sledge, as=0.8 m/s2   The acceleration of the dog, ad=0.2 m/s2   The rope…

Q: 1. The positon vector r of a particle of mass 2 kg at time t seconds is given by r- [(2 sin 2t) i +…

A: Given:Radius, r =2 sin 2ti^ + 1- cos 2tj^ mmass, m = 2 kgSolution:A. i) The velocity function is…

Q: Question 5: A ball of mass m collides with a wall with initial velocity –voj (and then it rebounds).…

A: Impulse Momentum Theorem According to the impulse-momentum theorem, the change in momentum of a body…

Q: Assume that the velocity V of fall of an object depends on the height H through which it falls, the…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”