A train is traveling at a velocity of 85 feet per second when it hits its brakes. It slows down at a constant rate of 0.8 feet per second each second until it stops. DO NOT ROUND YOUR ANSWERS.   ​1) How long will it take the train to​ stop? Answer in decimal form.   ​2) After it hits its​ brakes, how many feet will it travel before it​ stops? Answer in decimal form.

Q: Consider the following three forces: F₁ =(285 N)î+(468 N)Ĵ, F2 =(-127 N)î, and F3 =(-753 N)Ĵ.

A: According to question we need to find direction of net force.

Q: You have a container like the one shown in figure 1 from which you want to extract liquid with the…

A: Given that: Height's will be measured taking D as a reference point.

Q: 8. A stone is dropped from the top of a building(ve= 0). It hits the ground after 2.0 s. The height…

A: Given value--- falling time = 2 sec. We have to find--- height?

Q: If car A is travelling at a velocity of 20m/s and car B is travelling at a velocity of 10m/s, find…

A:

Q: Given M = 3 î + 4 ĵ – 4 k, and  N = î − 4 ĵ −  k, calculate the vector product  M x N

A: Given: M=3i+44j-4kN=i-4j-k

Q: Identify whether the given statement is true. If the statement is false, write the correct…

A: 1.Statement is False  Reason: For Uniform Velocity Acceleration is Acting towards the centre and…

Q: Problem 4. The mass of the sun is denoted by Mo 1. The star UY Scuti has a mass of 10M. Express the…

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Q: A boat moves in still water with a velocity which is & times less than the river flow velocity. Find…

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Q: Using the Line of Stability graph, predict the type(s) of decay that each of the following…

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Q: ILLUSTRATION 3.21 A particle acted by constant forces 41 +1 -3k and 31 + -k is displaced from point…

A: Given Data:- F1 = 4i + j - 3k, F2 = 3i + j - k & r1 = i + 2j + 3k, r2 = 5i + 4j + k Find total…

Q: rocket is fired at a speed of 83.0m/s from ground level, at an angle of 66.0 degrees above the…

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Q: How much water remains unfrozen after 53.0 kJ is transferred as heat from 458 g of liquid water…

A: Given Information:- Amount of heat transferred from the water is Q=53.0 kJ Mass of the liquid water…

Q: Find the kinetic stored in ball having mass 0.5 kg moving with velcoity 3.3 m/s. Report answer in…

A: Given value--- mass = 0.5 kg. velocity = 3.3 m/s. We have to find--- kinetic energy?

Q: Dominador, who is standing on the edge of an 80-m tall cliff facing the sea, kicks a ball…

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Q: A cannon launches a cannonball from level ground with an initial speed of 80 m/s at an angle of 280…

A: Given data:  Initial velocity (u) = 80 m/s Angle (θ) = 28°,above the horizontal g = 9.81 m/s2…

Q: In the figure a "semi-infinite" nonconducting rod (that is, infinite in one direction only) has…

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Q: Find the location, size, and nature of the image of a ring 7.5 cm in diameter and distanced 61 cm a…

A: Given  Diameter of ring, d = 7.5 cm   Object distance, U = -61 cm  = -0.61m Focal length ,F = 41 cm…

Q: A newly proposed device for generating electricity from the sun is a heat engine in which the hot…

A: Given:Tc=20°C and emax=60%Formula:Max. efficiency of the heat engine…

Q: Please send me the question in 20 minutes it's very urgent plz find

A: An automatic car cruise control is capable of controlling the car speed at a constant speed…

Q: Kindly elaborate more on how the thickness of the sheet is coming to 2.4cm because what was given is…

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Q: V= mph A typical break shot in pool (the opening shot) is about 20 mph with a ball that is about…

A: We have value of unfold sling = 5.54 ft Redius =5.542 ft Angle made below horizontal (θ) =4.73°…

Q: 8. A stone is dropped from the top of a building(ve=0). It hits the ground after 2.0 s. The height…

A: We know from the kinematic equation s=vot+12at2And in this case h=0+12gt2hereh is the heightg=9.81…

Q: An explorer in Antarctica leaves his shelter during a whiteout. He takes 50 m northeast, next 180 m…

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Q: Write a brief summary of the behavior and sources of magnetic fields

A: A magnetic field is a vector field that describes the magnetic influence on moving electric charges,…

Q: What is the net force needed to accelerate a 10-kg object at the acceleration of 2 m/s²? 5 newtons…

A: Write the expression for the net force. Here, m is the mass and a is the acceleration.

Q: If the absolute pressure is 300 Kelvin, what is the equivalent in degree Rankine?

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Q: A golfer is attempting to reach the elevated green by hitting his ball under a low-hanging branch in…

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Q: An object's position is given by r(t) = [a + Bt] i + [v+ot²] where 3 • α = 4.66 m • B = 1.26 m/s 7…

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Q: Identify whether the given statement is true. If the statement is false, write the correct…

A: As per guidelines only 3 subparts are solved here. 1. Acceleration acts to change the direction of…

Q: Find the kinetic stored in ball having mass 0.5 kg moving with velcoity 3.3 m/s. Report answer in…

A:

Q: A boy throws a baseball onto a roof and it rolls back down and off the roof with a speed of 4.05…

A: As the ball rolls down the roof, it falls at an angle which is equal to the inclination of the roof,…

Q: Part B Find the direction of the vector A = (5.1 m ) + (-0.30 m )ŷ. Express your answer using two…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A horizontal spring of constant k connected to a mass m slides on a horizontal surface that presents…

A: In the following problem,  Amplitude of oscillation decreases by 0.95 A. Number of cycle, n=10

Q: You stop recording velocity data at t=4.0 st=4.0 s, but you notice a short time later that your…

A:

Q: Can you please describe this problem solution in more detail - thanks!!

A: Given,  M = 3 î + 4 ĵ – 4 k^ N = î − 4 ĵ −  k^

Q: Find the momentum if car has mass of 60 kg moving with velocity 2 m/s

A: Given data:  Mass (m) = 60 kg Velocity (v) = 2 m/s Required: The momentum (P)

Q: A projectile is launched from point A with speed vo= 38 m/s. Determine the value of the launch angle…

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Q: The acceleration of a particle is given by a 3t-37, where a is in meters per second squared and tis…

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Q: A small plastic ball of mass m = 1.00 g is suspended by a string of length L = 24.5 cm in a uniform…

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Q: An Olympic runner competing in the marathon finishes with a time of 2 hours, 23 minutes, and 45…

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Q: The figure below shows forces acting at various points on a metal shaft. The angles ? = 48°, ? =…

A: Given data, Angels, α=48°β=35°γ=21° Length l=3.6 m

Q: m A motorcycle accelerates uniformly from rest at 7.9 km to reach a speed of 100 We want to find the…

A: Here, initial speed V0 =0     Final speed V = 100 km/h =  27.78 m/s     Acceleration a = 7.9 m/s²

Q: a) Let us first derive the expression for the tension. By Newton's First Law the components of force…

A:

Q: How much faster is something in nanoseconds relative to milliseconds?

A: We know that  1 ns = 10-9 s and 1 ms = 10-3s And  1ns/ 1ms =10-9/10-3=10-6 .

Q: Starting with Maxwell's equations show that; in free space with no charge or current, arbitrary E…

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Q: Vector F1 = 625 N makes an angle of 270o when rotated counterclockwise from the +x axis. Vector F2 =…

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Q: Q4.:Block A in Fig 2 weighs 50 N and block B weighs 35 N. The blocks are connected by a flexible…

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Q: 1) (a) A line charge of charge per unit length occupies the negative x-axis. Find the electric field…

A: Given, linear charge density of line charge is λ, charge occupying negative X axis,

Q: - The height of the building is: 9.8 m b) 9.6 m c) 4.9 m It hits the ground after 2.0 d) 19.6 m

A: Given value--- initial velocity = 0 m/s. time = 2 s. We have to find--- height of building?

Q: A jet is flying at 132.4 m/s along a straight line and makes a turn along a circular path level with…

A: Given , Speed of jet (v) = 132.4m/s  Centripetal acceleration (ar) = 1.78g =17.444 Let radius of…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –