A 1500 kgkg car skids to a halt on a wet road where μkμkmu_k = 0.55. You may want to review (Pages 141 - 145) . How fast was the car traveling if it leaves 60-mm-long skid marks? Express your answer to two significant figures and include the appropriate units.

Q: Calculate the final speed of a 110 kg rugby player who is initially running at 8 m/s but collides…

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Q: Block A with mass ma= 2kg is moving along x-axis. It collides with a block B with mass mB = 6kg that…

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Q: Two toy trains with velcro collide on a train track in a completely inelastic collision. The blue…

A: Mass of A train (Ma) = 5.7 g Mass of B train (Mb) = 9.3 g Initial velocity of A train (Va) = 4.5 m/s…

Q: A 0.260 kg billiard ball that is moving at 4.70 m/s strikes the bumper of a pool table and bounces…

A: Given  Mass of ball m=0.260kg Initial spped u=4.70m/s Final speed v=-3.76m/s time t=0.018s

Q: What average force is necessary to stop a 16 g bullet travelling at 260 m/s as it penetrates into a…

A: Using kinematic equation, the expression for find acceleration of the bullet is v2=u2+2asa=v2-u22s…

Q: A 5.08×104 kgkg railroad car moves on frictionless horizontal rails until it hits a horizontal…

A: Given Mass of the car m = 5.08 x 104 kg Spring constant k = 4.09 x 105 N/m Compression x = 30 cm =…

Q: Ah artillery shell traveling east at a speed of 200 m/s suddenly explodes into three parts. Piece 1…

A: Given  initial velocity of shell, u = 200 m/s , due east mass of first piece of shell after…

Q: a 3000 kg truck is driving at 20 m/s north. it collides head-in with a 1200 kg car travelling south…

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Q: Car A of mass 2000 kg moving at 72 km/h, east tries to overtake car B of mass 1250 kg moving at 60…

A: Given : m1 = 2000 kg v1 = 72 km/h, east m2 = 1250 kg v2 = 60 km/h, east

Q: as shown in fig (1),m2 = 2 kg, h2 = 3 m ,ml = 4 kg, , hl = 0.95 m, and uk = 0.25. estimate (a) the…

A: Mass of the hanging object is m1 = 4 kg Mass of the object on the table is m2 = 2 kg Height of the…

Q: One morning in Monterrey after a winter frost, a 1,400 kg car traveling west on Calle Hidalgo at 9.7…

A: Given : Mass of the car, m = 1400 kg speed of car, v = 9.7 m/s Mass of truck, M = 2800 kg Speed of…

Q: A tennis ball with a mass of 60 grams is moving at 20 m/s. It is struck so that it returns back…

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Q: In the figure here, a stationary block explodes into two pieces L and R that slide across a…

A: SOltuion: mL = 3.1 kg μL=0.45μR = 0.56dL =0.48 mdR = 0.42 m

Q: In the figure here, a stationary block explodes into two pieces L and R that slide across a…

A:

Q: A puck with mass mA = 2.42 [g] moves eastward with speed vA = 1.73 [m/s]. It then collides with…

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Q: A 1000 kg car travelling at 30m/s collided head-on with a 2000 kg van travelling at 20 m/s. After…

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Q: atomic nucleus initially moving at 375 m/s emits an alpha particle in the direction of its velocity,…

A: Given  Initial speed = u = 375 m/s  Final speed = v = 250 m/s  Mass of alpha particle = Mh = 4 .0 u…

Q: Emma and Katie are racing along in their new wagon. Upon reaching the bottom of the hill traveling…

A: Given Katie speed at the bottom of the hill = u = 13.2 m/s Distance between Katie and her teddy bear…

Q: A 0.22LR caliber bullet has a mass of 31 grains (2.00 g) and a muzzle velocity of 1750 ft/s (530…

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Q: A 975 kg car going 24.6 m/s to the east collides with a 1630 kg truck going 5.26 m’s to the west and…

A:

Q: A basketball of mass 0.6kg is dropped from rest. Just before striking the floor, it has a momentum…

A: Given data: Mass of basketball is, m=0.6 kg. Momentum is, P=3.1 kg·m/s.

Q: A 2,511 kg railroad car moving at 4.192 m/s to the east collides with a 8,199 kg railroad car moving…

A: Given data The mass of one railroad car is given as m1 = 2511 kg. The initial velocity of the first…

Q: A snowball is thrown with a speed of 49.5 km/h, giving it momentum with a magnitude of 2.90 Ns. The…

A: The speed of the snowball is given by  v = 49.5 km/h = 13.75 m/s The momentum p = 2.9 Ns = 2.9 kgm/s…

Q: Block 1 with a mass of 1.0 kg slides down a frictionless ramp with a height of 3.0 m and collides…

A: Mass of block 1 (M1) = 1.0 kg Height (H) = 3.0 m Mass of block 2 (M2) = 2.0 kg Friction coefficient…

Q: Canadian nuclear reactors use heavy water moderators in which elastic collisions occur between the…

A: Given that Canadian nuclear reactors use heavy water moderator in which elastic collision between…

Q: a 1040 kg car and 3360 kg truck collide perfectly inelastically. before the collision, the car…

A: From the conservation of momentum along the x-axis, determine the x-component of their final speed…

Q: A bullet of mass mm is fired into a block of mass MM that is at rest. The block, with the bullet…

A:

Q: A 0.150-kg glider is moving to the right on a frictionless, horizontal air track with a speed of…

A: Given data: Mass of glider 1 is, m=0.150 kg. Speed of glider 1 is, u1=0.80 m/s. Mass of glider 2 is,…

Q: In the figure here, a stationary block explodes into two pieces L and R that slide across a…

A: Given mL=1.1 Kg     mR=?μL=0.49dL=0.3μR=0.47dR=0.38

Q: Tyrrell throws his 0.20 kg football in the living room and knocks over his mother’s 0.80 kg antique…

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Q: A 0.543-kg ball, initially moving with a speed of 2.67 m/s, bounces off a wall and then moves with a…

A:

Q: A 50 kg teen running 6 m/s jumps onto a 6 kg skateboard that is stationary. After he jumps on, the…

A: mass of teen m1 = 50 kg initial velocity of teen u1 = 6 m/s mass of skateboard m2 = 6 kg initial…

Q: 2) (A jas shown in fig (1),m2 = 2 kg, h2 = 3 m ,ml = 4 kg. , hl = 0.95 m, and uk = 0.25. estimate…

A: Given data: Masses: m1=4 kg; m2=2 kg Height: h1=0.95 m; h2=3 m Coefficient of kinetic friction,…

Q: A body of mass 40 kg has the mom 2000 kgm/s. Calculate; 1. Speed of the body. 2. K.E of the body.

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Q: 2. A 1.2-kg object moving with a speed of 8.0 m/s collides perpendicularly with a wall and emerges…

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Q: A 0.508 kg ball, initially moving with a speed of 3.3 m/s bounces off a wall and then moves with a…

A:

Q: A small block of mass m = 3.00 kg starts from rest and slides down a rough 30.0° incline from a…

A:

Q: A 10.0-g bullet is fired into a 200-g block of wood at rest on a horizontal surface.After impact,…

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Q: A 0.25-kg ball, initially at reston a tee, is hit with a bat in the x-direction while 1.00 meter…

A:

Q: In the figure here, a stationary block explodes into two pieces L and R that slide across a…

A: Given that:Mass of L, mL=3.3 kgCoefficient of kinetic friction, μL=0.52Distance, dL=0.32 mLet the…

Q: A 0.230 kg billiard ball that is moving at 3.70 m/s strikes the bumper of a pool table and bounces…

A: Mass of billiard ball (m) = 0.23 kg Initial velocity (u) = 3.70 m/s Final velocity (v) = - 2.96 m/s…

Q: Suppose a clay model of a koala bear has a mass of 0.240 kg and slides on ice at a speed of 0.745…

A: Given: mass of koala bear, m1 = 0.240 kg initial velocity of koala bear, u1 = 0.745 m/s mass of…

Q: Emma and Katie are racing along in their new wagon. Upon reaching the bottom of the hill traveling…

A:

Q: Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides…

A: We have the equation Favg∆t=I Where  I is the impulse Favg is the average external force acting on…

Q: A 105-kg rugby player is initially running at 7.5 m/s in the positive direction, but collides…

A:

Q: A 1 kg and a 9 kg cart can move on an air-track without friction. Initially the 1 kg cart moves with…

A: Given: The masses of the carts are (m1), (m2) 1 Kg, and 9 Kg respectively. The initial velocity (u1)…

Q: A 9,200-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are…

A:

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.