A particle moves along an x axis. Does the kinetic energy of the particle increase, decrease, or remain the same if the particle’s velocity changes (a) from $3 m/s to $2 m/s and (b) from $2 m/s to 2 m/s? (c) In each situation, is the work done on the particle positive, negative, or zero?
Q: A force F(x) = (-7.0x² + 3.0x) N acts on a particle. (a) How much work (in J) does the force do on…
A:
Q: A collie drags its bed box across a floor by applying a horizontal force of 6.7 N. The kinetic…
A: The work done by horizontal applied force, F, to drag a mass by a distance d, is given by: Work =…
Q: A 2.5 kg object undergoes a displacement Ar=3.0 ml +3.5 mĵ-2.0 m k along a straight line. During the…
A:
Q: You drop a 3.00 kg book to a friend who stands on the ground at distance D = 11.0 m below. If your…
A: Mass of the book, m = 3.00 kg Acceleration due to gravity, g = 9.81 m/s^2 Distance between the…
Q: A worker slides a box of mass 10 kg at a constant velocity, along a flat surface. tHE WORKER IS…
A:
Q: A 1.3 kgkg book is lying on a 0.80 mm -high table. You pick it up and place it on a bookshelf 2.2 mm…
A:
Q: In the figure, a frictionless roller coaster car of mass m = 632 kg tops the first hill with speed…
A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…
Q: The normal force from the pogo stick on your feet has magnitude Npy(y) = F1(1 −y/h) where F1 =…
A:
Q: The graph shows the x component of a force that acts on an object that moves on the x axis. The…
A:
Q: True or false The potential energy of an object cannot be increased by internal forces. When a…
A: Internal forces are kind of forces that are exchanged by the object in the system. The internal…
Q: The figure gives the acceleration of a 5.0 kg particle as an applied force moves it from rest along…
A:
Q: A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0…
A:
Q: 0.46 kg particle has a speed of 5.0 m/s at point A and kinetic energy of 7.5 J at point B. (a) What…
A: using kinetic energy formula and work energy theorem,
Q: A block is acted on by a force that varies as (2.0×104N/m)x for 0≤x≤0.21m, and then remains constant…
A: Given data :- Force F = 2.0×104 N/m ; 0< x ≤ 0.21 m x = 0 to x = 0.30 m (for this range we wish…
Q: forces act, one of which is known to be constant in time: F1 = (5 N)î + (7 N)ĵ. As a result, the…
A: Work done by the force is given as W = F.r r = displacement vector
Q: A 10 kg mass is released from rest from the top of a 2 m long ramp, inclined at 30°. The speed of…
A: 7) work done by the friction = final kinetic energy - initial potential energy W = (1/2)(10)(2)2 -…
Q: Consider the force F shown in the drawing. This force acts on an object that can move along the…
A: Write the expression for the work done.
Q: A particle of mass 2.0 kg moves under the influence of the force F(x) = (-5x² = 7x) N. Suppose a…
A: We must ascertain the amount of work the frictional force does.
Q: An object of mass m = 2 kg moves along the x-axis from the initial position x₁ = 2 m to the final…
A: Given Data:- Mass of the object is m=2 kg Initial position of the object is xi=2 m Final position of…
Q: In the arrangement of spring and block in the video, we first pull the block from x = 0 out to x =…
A:
Q: helicopter lifts a 80 kg astronaut 17 m vertic (a) How much work is done on the astr (b) How much…
A: GivenMass of Astronaut, m=80 kgDistansed moved vertically, d=17 mAcceleration of Astronaut, a=g10
Q: A coin slides over a frictionless plane and across an xy coordinate system from the origin to a…
A:
Q: Two different forces F1 and F2 acts on an object as shown in Fig. F1= 6i+7j+8k and F2 = 2i+3j+4k.The…
A:
Q: In the graph that I am showing in the attachment where x component of force acts on an object moving…
A:
Q: A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0…
A: Write the given values of the problem- the block is pulled out then-x=5 cm force of the…
Q: The force F = (5.69 N)i + (7.69 N)j acts on a particle as it moves first along the x axis from x =…
A:
Q: rope pulls a 200 kg sleigh (which you may know) up a slope at incline angle θ = 30◦, through…
A:
Q: A 0.34-kg particle has a speed of 3.0 m/s at point A and kinetic energy of 8.1 J at point B. (a)…
A: Mass of the particle m=0.34 kg Speed of the particle at point A ,vA=3.0 m/s The kinetic energy at…
Q: A 0.41-kg particle has a speed of 3.0 m/s at point A and kinetic energy of 8.0 J at point B. (a)…
A: (a) Calculate the kinetic energy at point A. KEA = 0.5*m*vA2 = 0.5*0.41*32 = 1.85 J
Q: Early one October, you go to a pumpkin patch to select your Halloween pumpkin. You lift the 3.0 kg…
A: Assuming pumpkin is lifted and moved on level ground such that its kinetic energy does not change,…
Q: Number Units Number i Units Number Units Number Units (c) x
A:
Q: A factory worker moves a 20.0 kg crate a distance of 4.40 m along a level floor at constant velocity…
A: ...
Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…
A: (given) Mass of an asteroid = 5.8Initial speed of asteroid = 6700 m/s Final speed of asteroid =…
Q: A spring and block are in the arrangement of the figure. When the block is pulled out to x = +4.0…
A: A spring and block are in the arrangement of the figure. When the block is pulled out to x = +4.0…
A particle moves along an x axis. Does the kinetic energy of the particle increase, decrease, or remain the same if the particle’s velocity changes (a) from $3 m/s to $2 m/s and (b) from $2 m/s to 2 m/s? (c) In each situation, is the work done on the particle positive, negative, or zero?
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
- A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates (3.70 m, 4.78 m) while a constant force acts on it. The force has magnitude 2.08 N and is directed at a counterclockwise angle of 100° from the positive direction of the x axis. How much work is done by the force on the coin during the displacement?A helicopter lifts a 65 kg astronaut 18 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. (a) How much work is done on the astronaut by the force from the helicopter? (b) How much work is done on the astronaut by her weight? (c) What is the kinetic energy? (d) What is the speed of the astronaut just before she reaches the helicopter? m/sA factory worker pushes a 30.0 kg crate a distance of 3.7 m along a level floor at constant velocity by pushing downward at an angle of 30∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. How much work is done on the crate by this force when the crate is pushed a distance of 3.7 m? How much work is done by the normal force? How much work is done by gravity? What is the total work done on the crate?
- In the figure, a frictionless roller coaster car of mass m = 992 kg tops the first hill with speed v0 = 16.7 m/s at height h = 40.7 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? If the gravitational potential energy of the car-Earth system is taken to be zero at C, what is its value when the car is at (d) B and (e) A? I know the first one is 0 J.The graph shows the x component of a force that acts on an object that moves on the x axis. The vertical spacing between adjacent grid lines is 4.98N, while the horizontal spacing between adjacent grid lines is 1.0m. What is the work, in joules, done by the force as the object moves from x = 4m to x = 5m ? F (N) C C 0 x (m)A 0.32-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.1 J at point B. (a) What is its kinetic energy at A? (b) What is its speed at point B? m/s (c) What is the total work done on the particle as it moves from A to B?
- A 0.32-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.4 J at point B. (a) What is its kinetic energy at A?J(b) What is its speed at point B?m/s(c) What is the total work done on the particle as it moves from A to B?JConsider an object of mass m = 4 kg on a frictionless table. The object experiences a repulsive force F = a/x2 + b/x, where F is in newtons and x is the position of the object relative to the origin. Write an expression for the work done by the repulsive force on the object as it moves from an initial position of x1 to a final position of x2. If the object starts at a position of x1 = 8.5 m apart, how much work, in joules, is required by an external force to bring it to a position of x2 = 2.5 m apart when a = 19 and b = 11? If the object starts at rest at a position x3 = 1.3 m and is released, at what speed v, in meters per second, will the object be moving when it is at position x4 = 12.5 m?A rope is tied to a box and used to pull the box 1.5 m along a horizontal floor. The rope makes an angle of 30° with the horizontal and has a tension of 5 N. The opposing friction force between the box and the floor is 1 N. How much work does each of the following forces do on the box: (a) gravity, (b) the tension in the rope, (c) friction, and (d) the normal force? What is the total work done on the box?
- On a horizontal surface, an object slides from point P to point Q along a straight line, then slides back from Q to P along a semicircle. If P and Q are a distance L apart, how much work did the force of kinetic friction do during the entire process? The magnitude of fk is fk.A 0.59-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.5 J at point B. (a) What is its kinetic energy at A? J(b) What is its speed at point B? m/s(c) What is the total work done on the particle as it moves from A to B? J10.0 m + 8.0 m A 2.4 kg flower pot is on a shelf 10.0 meters above the floor. How much work was done to move the object to a shelf 8.00 meters above the floor? floor A 240 Joules B 192 Joules 48 Joules D 24 Joules O O O O