a) Calculate the force needed to bring a 800 kg car to rest from a speed of 85.0 km/h in a distance of 130 m (a fairly typical distance for a nonpanic stop). ............N(b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a), i.e. find the ratio of the force in part(b) to the force in part(a)..............(force in part (b) / force in part (a))

Q: Hi, I don't know if I was given enough or have too much uneccesary information to solve this…

A: First, apply momentum conservation, and solve for the velocity of the unit at point A along…

Q: A softball having a mass of 0.25 kg is pitched horizontally at 120 km/h By the time it reaches the…

A: Given, Mass of softball is 0.25 kg and speed is 120 km/h and it slowed by 10% and distance between…

Q: In the figure, a runaway truck with failed brakes is moving downgrade at 170 km/h just before the…

A:

Q: A car weighing 3300lb is moving at a speed of 38mi / h at a certain moment the driver pressed the…

A:

Q: A constant horizontal force moves a 50 kg trunk 9.4 m up a 28° Incline at constant speed. The…

A:

Q: 1. One block of mass m_1=2.0 kg is sliding down along a frictionless ramp from a height of h=2.5 m.…

A: Ans:- Image-1 Given datamass m1=2.0 kgmass m2=1.0 kgKinetic friction uk=0.50height h=2.5 ma)Velocity…

Q: a. Calculate the force (in N) needed to bring a 1050 kg car to rest from a speed of 80.0 km/h in a…

A: Mass of the car,

Q: A 70 kg firefighter slides, from rest, 4.3 m down a vertical pole. (a) If the firefighter holds onto…

A: Given : height of pole, h = 4.3 m              mass of firefighter, m = 70 kg              average…

Q: A whale shark has a mass of 2000kg. Suppose a crane lifts the shark off the groundfrom rest to 1 m/s…

A: Given data: The mass of whale is m=2000 kg. The velocity is v=1 m/s. The time interval is t=8 s.

Q: A time-dependent force, F = (7.90î - 3.30tj), where F is in newtons and t is in seconds, is exerted…

A:

Q: In the figure, a runaway truck with failed brakes is moving downgrade at 107 km/h just before the…

A: Given,

Q: A train is traveling up a 2.88° incline at a speed of 4.31 m>s whenthe last car breaks free and…

A: Let v0 denote the initial speed of the last car. Let θ denote the angle of the incline. Without…

Q: a) Calculate the force needed to bring a 1050 kg car to rest from a speed of 95.0 km/h in a distance…

A: a)The work energy theorem is,

Q: An automobile weighing 5500 lb is driven down a 5° incline at a speed of 60 mi/h when the brakes are…

A: Given Data : The weight of the car is given as W = 5500lb. The initial speed of the car is given as…

Q: A 6.1-Mg truck is resting on the deck of a barge which displaces 250 Mg and is at rest in still…

A:

Q: 4. A dog of mass Md is standing on a raft so that he is a distance Xdgi = L from the shore. He walks…

A: Given :    m1 = Md                m2 = Mb                Xdgi = L               ∆xds = d m1 → mass…

Q: A 49.60-kg skier with an initial speed of vi-34.00 m/s coasts up a H=17.25-m-high rise with a slope…

A:

Q: A 325-g model boat facing east floats on a pond. The wind in its sail provides a force of 1.25 N…

A: First find net force on boat

Q: A 0.6 ton motor is moving on a leveled highway at a speed of 108 km/hr. How large is a retarding…

A:

Q: Determine the Value of Total Energy about Point A TEa= Determine the Value of Total Energy about…

A: Mass of the automobile Speed of automobile at point A Speed of automobile at point B For…

Q: In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but…

A: Given , terminal velocity u=56 msmass m=85 kgForce F=1.2x105 N

Q: In space v = (-5) ux + (-3) uy + (4) uz [m / s] speed moving q = 4 [C] load, E = (5) ux + (10) uy +…

A: Given: q=4Cv→=-5 u^x -3u^y +4u^zE→=5 u^x +10u^y + 7u^z B→=8 u^x + 9u^y +4u^z

Q: estimated to be .30. (a) Use these data to determine the speed of the car when the driver slammed on…

A:

Q: In the figure, a runaway truck with failed brakes is moving downgrade at 110 km/h just before the…

A:

Q: In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but…

A:

Q: In space v = (-5) ux + (-3) uy + (4) uz [m / s] speed moving q = 4 [C] load, E = (5) ux + (10) uy +…

A: Electric force  Fe = qE Magnetic force Fm = q(v×B)

Q: traveling at a speed of 50 m/s. But the driver noticed that the bridge 300-m ahead is missing. At…

A: Given data: The mass of the train is m=20×103 kgm=20×103 kg. The speed of the train is v=50 m/s =50…

Q: A car of mass 907 kg coasts on a level road, starting with an initial speed of 14.9 m/s and coming…

A: Given data: Mass (m) = 907 kg Initial velocity (v0 ) = 14.9 m/s final velocity (v) = 0 m/s Time (t)…

Q: A plane is preparing to takeoff at one end of a runway. The length of the runway is 2.6 km, and the…

A:

Q: In the figure, a runaway truck with failed brakes is moving downgrade at 106 km/h just before the…

A: Given   Velocity , V = 106 km/h  Mass, M = 1.4× 104 Kg

Q: A horizontal force of 1.5 N acts on a 0.2kg mass to accelerate it along a horizontal path. How fast…

A:

Q: Calculate the force (in N) needed to bring a 1000 kg car to rest from a speed of 80.0 km/h in a…

A: First, we need to convert the speed from kilometers per hour to meters per second because the…

Q: 1.4 kg body as it moves along the positive x axis has an x component Fx = -5x N,

A: Given: Mass of body is m=1.4 kg The force on body along x-axis is Fx=-5x N; here x is in meters. At…

Q: Two forces, F, = (2.70î – 3.40j) N and F, = (3.70î – 7.80j) N, act on a particle of mass 2.10 kg…

A: F1 = 2.7 i - 3.4 j  F2 = 3.7 i - 7.8 j  mass, m = 2.1 kg

Q: The crate of mass m= 31 kg is at rest at A on the theta=7o incline. The coefficients of static and…

A: Given information: Here, m is the block’s mass, θ is the inclination angle, µs and µk are the…

Q: The position of a 2 kg object is given as z(t) = 3t2 + 5, where z is in meters and t is in seconds.…

A:

Q: Q2: Jane, who weighs 500 N, must cross a river full of hungry crocodiles to save Tarzan, who weighs…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Mr. M is riding on his bike while pulling his daughter in a trailer behind him. Their combined mass…

A: Given: Combined mass , M = 125 kg Velocity, v = 44 km/h = 12.222 m/s

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest.