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: A ball of mass 7.42 kg moving with speed 9.54 m/s hits a wall and bounces back with speed 5.77 m/s…

A: Given Data:- The mass of the ball is m = 7.42 kg The initial speed of the ball is vi = 9.54 m/s The…

Q: If a quantity you calculated had units of kg m/s, what type of quantity could it be? . none of the…

A: Kg is the unit of mass  and m/s is the unit of Velocity.

Q: 1. For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m…

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Q: In the figure, a 3.7 kg block slides along a track from one level to a higher level after passing…

A:

Q: 4

A: Assume that the mass of each sphere is m2, the distance between the center of mass and the spheres…

Q: Significant Powers-of-Ten Notation Figure Notation 4,060,000 m 4.06 x 10 m E. Н. 3SF А. 9.721 x…

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Q: A skier starts at the top of a 26.6-meter hill. Assuming there is no friction and no air resistance,…

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Q: A 300 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 3.0 N/cm…

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Q: A roller coaster at the top of a 65.2m tall hill with a speed of 0 m/s. What is its speed in m/s…

A:

Q: A 1.0 lbm piece of foam accelerates at 100 g’s for 0.25 seconds. (Use g = 32 ft/s^2). a) How fast is…

A: Given  m1=1 lbm (mass of foam) u1= 0 (initial velocity of foam) a1=100g=100*32=3200 ft/s2…

Q: At what speed must a particle move in order to double its mass? a. 2.6x108 m/s b. 2.8x108 m/s…

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Q: How fast will it be going when it hits the ground

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Q: A 119 kg juggling platypus had an elastic collision with a 164 kg furry manicurist. After the…

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Q: (d) particle. What is the maximum possible magnitude of the energy transferred? Starting from t = 10…

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Q: A curious Student drops a 3 g coin from a 34 m high window. What is the velocity of the coin just…

A: Given:-  The mass of the coin  m = 3 g  The height of the window is h = 34 m  Find:-  What is the…

Q: A 3.77 g bead slides along a frictionless wire, as shown in the figure. At point A, the bead is…

A:

Q: A cart which has a mass of 20 kilograms slides down a frictionless slope of a hill. If the cart…

A: Given value--- mass = 20 kg. speed at bottom = 15.6 m/s. We have to find --- height?

Q: When a 1984 Alfa Romeo Spider sports car accelerates at the maximum possible rate, its motion during…

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Q: In the figure, a 4.1 kg block slides along a track from one level to a higher level after passing…

A:

Q: the ramp is 1 meter long and tilted at 5o. The ball has a mass of 30 grams. What is the speed of the…

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Q: Mass is 2.0-kg. Released from rest at X, the speed at Y is closest to:

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Q: a 76kg man pushes off from the 89kg ice block and slides at a speed of 2 m/s. What is the speed of…

A: Given data: Mass of man (m1) = 76 kg Speed of man (v1) = 2 m/s Mass of ice block (m2) = 89 kg…

Q: A 70kg person is sliding down a sliding board. The board has an angle of 50 degrees. The Uk is 0.1.…

A: mass = 70 kg angle of incline = 50oμk = 0.1t = 2 sec acceleration for a person sliding down an…

Q: Josh slides down a hill in a sled with a total mass of 100 kg. He starts at the top of a hill 20 m…

A:

Q: J.D. runs on a treadmill and his VO2 is measured to be 45 ml/kg/min at a 4% grade. What is his…

A: By ACMS running equation:Given values:Grade =

Q: A proton (mass m = 1.67 x 10 27 kg) is being accelerated along a straight line at 4.60 x 1010 m/s?…

A: mass of the proton, m = 1.67 ×10-27 kgaccelerated along the straight line at, a = 4.60 ×1010…

Q: A car is parked at the top of a 70-m high hill. It slips out of gear and rolls down the hill. How…

A: solution as

Q: A 400. kg cart slides along the track shown in the image, beginning at point A. It starts from rest…

A:

Q: On an alien planet, a rock dropped from 4 m above the ground moves at 8 m/s when it lands on the…

A: Given Data:- Height of the rock is given as h=4 m Final velocity of the rock just before hitting the…

Q: A typical baseball has a mass of 0.145 kg. Some pitchers can throw a baseball with a speed of about…

A:

Q: What is the speed of a 14 kN body at rest then falling from a height of 238 m.

A: During free fall if the air resistance is neglected the final velocity of a body dropped from a…

Q: A 120 kg block is pulled at a constant speed of 8.0 m/s across a horizontal floor by an applied…

A: mass of block = m = 120 kg speed = V = 8 m/s applied force = F = 126 N angle = 18 degrees

Q: A 108 kg man is skiing across level ground at a speed of 9.5 m/s when he comes to the small slope…

A:

Q: Open Response 2: This is a multi-part problem. Please answer all parts here. A hollow sphere (m =…

A: Given mass m = 0.5 kg R = 0.8 m

Q: In the figure, a 3.7 kg block slides along a track from one level to a higher level after passing…

A: Initial velocity of block vo=6.5 m/s, mass of block m=3.7 kg, height of the frictional track above…

Q: Math Review 3.4x102 m/s. 12. The speed of light traveling through air is 3.0x108 m/s, while the…

A: To find the time we will use the relation Time=Distance/speed

Q: Your friend throws a stone that has a mass of 4kg straight down from the top of a 175m tall building…

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Q: We drop a plastic ball to the floor from a height of 2.0 m and let it bounce several times. 30% of…

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Q: A 35kg boy runs and jumps on a 3 kg sled. The sled stops moving at 10 meters. The coefficient of…

A:

Q: A block is released from rest at the top of a 47-m long frictionless ramp inclined at 34° above the…

A:

Q: The Flash (m -70 kg) has been timed running around the Earth's circumference (1.274 x 10 m) in only…

A: Mass of flash m = 70 kg Circumference D = 1.274 × 107 m time t = 5 minute = 5 × 60 = 300 seconds

Q: The total mass of the sled and the driver on it in the figure is 125 kg. The driver is moving up a…

A:

Q: A 75 kg bicyclist is traveling with some speed. She approaches a hill that is 56 m high. How fast…

A: Given: Mass, m = 75 kg Height of the hill, h = 56 m Final velocity of bicyclist, v = 1 m/s  Clearly,…

Q: The power required to drag an object through a viscous fluid (like honey) is P = –bv² , where v is…

A: Given data: Power required to drag P = -bv2 v is speed of the object  Required: SI unit of b

Q: A freely falling object on Earth has a speed of 65 m/s at one instant. Exactly 1 second later, the…

A: Speed of the freely falling object is =65m/sAcceleration due to gravity (g) = 9.81m/s2

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.