Insert Table Chart Тext Shape Media Comment Ce IV. Does kinetic friction depend on the speed of the object? 1. Make a prediction. As the speed of the object increases, does the kinetic friction increase, decrease, or stay the same? Give a reason for your prediction.
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Q: 6.) Two blocks, each having a mass of 20 kg, are connected by a string as shown in the figure. The…
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A: The coefficient of static friction can be obtained as
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A: Mass of upper block = 32 Kg mass of lower box = 48 kg coefficient of static friction between two…
Q: Question 6 An 18.0-kg box is released on a 34.22 degree incline and accelerates down the incline at…
A: Given The mass of the box is m=18 kg. The angle at which the box is inclined is θ=34.22°. The…
Q: Question 3 The kinetic friction force is always less than static friction force True False
A: TRUE Kinetic friction is always less than static friction.
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A: To find the coefficient of kinetic friction we need to calculate the deceleration first and then…
Q: 3. A block initially traveling at 2 m/s to the right slides 3 m before it comes to rest. What is the…
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Q: A force of 65N is needed to start an 8kg box moving across a horizontal surface. (A) Calculate the…
A: Given data: The force is F=65 N. The mass of the box is m=8 kg The acceleration is a=1.4 m/s2
Q: degree incline and accelerates down the incline at 0.26 m/s. Find the friction force impeding its…
A: Apply Newton's laws
Q: ASK YOUR TEAC A 1.120-N crate is being pushed across a level floor at a constant speed by a force F…
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Q: A book resting on a sheet of ice is given an initial speed vi in the +x-direction. The coefficient…
A: Given quantities: initial velocity = vi coefficient of kinetic friction = μk acceleration due to…
Q: Question 6 Tires that are rolling across the road use static friction, and tires that slide across…
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Q: A. I. Using an example, explain how statistical friction can be advantageous or disadvantageous. II.…
A: When a body is at rest ,the friction acting is called static friction . If a body is in motion ,the…
Q: 1) A 2 kg block is kicked up a 37 degree incline with initial speed 4 m/s (see Figure 1). If the…
A: Given: Mass of block, m=2 kg Initial speed, u=4 m/s Coefficient of kinetic friction between block…
Q: A person pushes horizontally with a force of 160. N on a 65.0 kg crate to move it across a level…
A: Given data: Force applied (F) = 160 N Mass (m) = 65.0 kg Coefficient of kinetic friction (μk) = 0.14
Q: Example: An object of mass 5 kg is released from rest 10 m above the ground and allowed to fall…
A: Net force acting on the ball can be given by Substitute the value of a in above equation
Q: Describe the difference between coefficients of static and kinetic friction. Which one is greater?…
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Q: A 1280 kg car pulls a 400 kg trailer. The car exerts a horizontal force of 3700 N against the ground…
A: M = 1280 kg m = 400 kg F = 3700 N μ = 0.14 FT = ?
Q: The coefficient of static friction between all surfaces is 0.6 and the kinetic coefficient is 0.4.…
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Q: A boy pulls a bag of baseball bats across a ball field toward the parking lot. The bag of bats has a…
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Q: Sam, whose mass is 71.0 kg, takes off down a 47.0 m high, 10.0 ° slope on his jet-powered skis. The…
A: Apply the third kinematic equation.
Q: 2. Draw a force diagram for the skater, moving at constant speed across frictionless ice. Label the…
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Q: 1. A block pulley system is arranged as shown, Where the coefficient of friction 0.5 between the…
A: Given:- The two-block are arranged as in the figure Find:- a) What is the force P that must apply…
Q: Jeff of the Jungle swings on a 7.6-m vine that initially makes an angle of 27 * with the vertical.…
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Q: 4. The figure shows two different frictionless ramps. The heights y, and yz are the same for both…
A: Given, The block are at two different friction less ramps. Block of mass, m initially at rest. The…
Q: 1. Considering the figure, calculate the needed force on the block that weighs 80kg to reach an…
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Q: Two weights are connected by a massless wire and pulled upward with a constant speed of 1.50 m/s by…
A: Solution:-
Q: A diagram represents a cart moving on a ramp. Assuming a frictional force of 12.2N. what is the…
A: Given data The angle of inclination is given as θ=50°. The gravitational force is given as Fg = 40…
Q: An athlete is about to step out of bounds during a basketball game so he plants his foot right at…
A: Weight, W = 350 N friction force, f = 270 N
Q: A 50 kg balikbayan box is at rest on a ramp inclined at an angle 15 degrees. The coefficients of…
A: In case the box is 50 kg please refer to the below answer. The answer would be different from the…
Q: Using examples, explain how friction (static or kinetic) can be useful. (I.e., When do we use…
A: Static Friction The frictional force between two bodies in contact with each other that does not…
Q: ysics textbook weighing 22 N rests on a desk. The coefficient of static friction between the book…
A: To produce motion applied force must be greater than limiting friction
Q: 5. A force of 36.0N accelerates a 6.0kg block at 7.0m/s2 along a horizontal surface. How large is…
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Q: 6. From a Kinetic Friction Experiment, calculate the coefficient of friction based on the following…
A: Given that:- Acceleration of the system=a=0.1322m/s^2
Q: how do we find kinetic friction coefficient in this question?
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Q: 6) Consider the four situations shown. All blocks are stationary and have the same weight hanging…
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Q: Question 4 Which of the following best describes the directions of friction and normal force? Your…
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Q: pround level Neglecting friction, which one of the following is the best expression for the speed of…
A: Given: The intial height of the ball is h1. The final height of the ball is h2. The surface is…
Q: 1. Why does the formula for static friction use the less than or equal sign while the formula for…
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Q: Q8: Two packages at UPS start sliding down the 20 degree ramp shown in Figure. Package A has a mass…
A: Given data mA=5 kgmB=10 kgθ=200μA=0.2μB=0.15
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- A sled with rider having a combined mass of 130 kgkg travels over the perfectly smooth icy hill shown in the accompanying figure.(Figure 1) How far does the sled land from the foot of the cliff? Express your answer in meters. d=________________mPlease answer it short and simple, but in an easy to understand way. What happens to the motion of the object when there is very little friction present? What did the surface look like? (hint: think: Ffr = ?Fn) What happens to the motion of the object when there is lots of friction present? What did the surface look like? What happens to the motion of the object when there is no friction present What did the surface look like?Work this problem out on paper and scan it or take a photo of it and upload the scanned image/photo here in either pdf, docx, png, or jpg format.A rocket accelerates from rest at a rate of 70 m/s^2.(a) what is the rocket's speed after it accelerates for 30 seconds?(b) how long does it take for the rocket to reach a speed of 7,250 m/s?
- . In Figure 1, we have added an inclined plane to our machine. Whenthe masses are let go, they begin to move. There is friction between theinclined plane and m1, the coefficient of which is µk.(a) Draw FBDs for each mass. Take the y-axis to be perpendicular to theplane, and the x-axis parallel to it.(b) Sum the forces in the x- and y-directions.(c) Solve the equations from part (b) for the acceleration.(d) Take your result for the acceleration from part (c) and substituteα = 90◦(we will assume that neither mass contacts the inclined planehere). What equation for the acceleration a do you obtain? How is thisrelated to the standard Atwood Machine we discussed in class?As a technical engineer in the army, you are part of a team in charge of testing and commissioning a new tankrecently purchased by the artillery.Field testing has revealed the following information:1) The tank moves from rest to a speed of 70 ??/ℎ? in 10 seconds.2) Using the breaking system, the tank is brought to a complete stop from a speed of 70 ??/ℎ? in 5 seconds.You are required to address all the questions below providing all calculations, graphs, and explanations asappropriate to back your answers The tank is to be placed on a hill that is 1 km high above the ground. The enemy’s base is located at a horizontaldistance of 10 km away and it is in a valley 0.5 km below the ground. Air resistance is neglected. Gravitationalacceleration is constant and equal to 9.8?/?2 downwards.a) If the bomb is to be fired perfectly horizontally, what should the launching speed of the bomb be in order tohit the target?b) What is the duration it would take the bomb to hit the target?c) Find x(t) and…1) A man pushes a 20.0 kg lawn mower with a force of 80.0 N directed along the handle, which is inclined at 30.0° to the horizontal as shown in the figure below. (a) If he moves at constant velocity, what is the impeding force due to the ground? (b) What force along the handle would produce an acceleration of 1.25 m/s' given the same impeding force? I need to show all work draw picture
- A 1,500-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0° below the horizontal, as shown in figure a below. (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 370-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a).Draw the complete free body diagram of a a 1000.0 kg block being pushed forward 10.0 N by a penguin, pushed backwards by Mr. Universe with 200.0 N, and an elephant pushing it forward with 410.0 N of force. Calculate the acceleration that this block experiences, and in what direction does it move. How much frictional force and in what direction must it be applied such that the block undergoes static equilibrium? plz show work so I can understandInstructions: Your task is to create a model in response to the prompts in the question below. Be sure to apply a model from this class and include the relevant diagram(s) for that model. And don’t forget to use the Claim, Evidence, Reasoning framework to present your solution. Phenomenon: Runaway Truck Ramp A truck was driving on a highway at 30 m/s when its brakes gave out. The driver steered it onto a “runaway truck ramp”, consisting of an upward ramp (rising 12 meters vertically over 120 meters horizontally), and ending with a compressible barrier which you can model as a giant spring with spring constant “k”. The compressible barrier can be compressed by a maximum 0.5 meters before it stops working. Graphic attached Values: Mass of the truck: 20 metric tons (1 metric ton = 1000kg). Mass of the driver: Choose a reasonable value. Truck Ramp Dimensions: 12 meters vertical, 120 meters horizontal Spring constant k= 6.0 x 107 J/m2. Part 1: Big…
- Illinois Jones is being pulled from a snake pit with a ropethat breaks if the tension in it exceeds 755 N. (a) If Illinois Joneshas a mass of 70.0 kg and the snake pit is 3.40 m deep, what isthe minimum time that is required to pull our intrepid explorerfrom the pit? (b) Explain why the rope breaks if Jones is pulledfrom the pit in less time than that calculated in part (a). Show your work and explain.In the (Figure 1) the coefficient of static friction between mass mAmA and the table is 0.50, whereas the coefficient of kinetic friction is 0.10. Ignore masses of the cord and the (frictionless) pulley. What minimum value of mAmA will keep the system from starting to move? Express your answer to two significant figures and include the appropriate units. What value of mAmA will keep the system moving at constant speed? Express your answer to two significant figures and include the appropriate units.The problem 67a is attached. I received the wrong solution already once. Please use the equation sheet attached and start with an equation on this sheet and show all algebra and conversion of formula and ALL steps. Please do not use U for velocity. Use V and subscript. I know the final answer and I know most steps but I need help with pulling it together. Please show all work. Final answer is 5.6m. Please help me get to this answer. I believe FnetdeltaT=deltaMA needs to be used first.