Is the work required to be done by an external force on an object on a frictionless, horizontal surface accelerated from a speed v to a speed 2v

(a) equal to the work required to accelerate the object from v=0 to v.

(b) twice the work required to accelerate the object from v=0 to v.

(c) Three times the work required to accelerate the object from v=0 to v.

(d) Four times the work required to accelerate the object from 0 to v.

(e) not known without a knowledge of the acceleration.

answer

watching

304

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Sagar YadavLv10

2 Jan 2021

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

You push an object initially at rest across a frictionless floor with a constant force for a time interval , resulting in a final speed of v for the object. You then repeat the experiment, but with a force that is twice as large. What time interval is now required to reach the same final speed v?

(a)

(b)

(c)

(d)

(e)

taupeworm634

1. A block is placed on a plane whose angle of inclination is 30˚. The coefficients of static and kinetic friction for the block on the inclined plane are both 0.2. The block
(A) remains stationary on the inclined plane.
(B) accelerates down the inclined plane.
(C) travels down the inclined plane at a constant velocity.
(D) travels up the inclined plane at a constant velocity.
(E) accelerates up the inclined plane.

2. An object with a mass of 5.5 kg is allowed to slide from rest down an inclined plane. The plane makes an angle of 30˚ with the horizontal and is 72 m long. The coefficient of friction between the plane and the object is 0.35. The speed of the object at the bottom of the plane is?

3. A 5-kg object slides down a frictionless surface inclined at an angle of 30˚ from the horizontal. The total distance moved by the object along the plane is 10 meters. The work done on the object by the normal force of the surface is?

4. A mass m = 2.5 kg is sliding along a frictionless table with initial speed v as shown in the figure. It strikes a coiled spring that has a force constant k = 500 N/m and
compresses it a distance x=5.0 cm. The initial speed v of the block was..?

5. The graph shows how the position of a particle depends on time. Which choice is closest to the instantaneous speed of the particle at t = 3s?
(A) 0.40 m/s
(B) 0.67 m/s
(C) 0.75 m/s
(D) 1.50 m/s
(E) 2.22 m/s

6. Calculate the work done by a force, F = 2x i, along the
path (0, 0) -> P₁(2, 0) -> P2(2, 2).

turquoisearmadillo973

A 2.00-kg object is attached to a spring and placed on a frictionless, horizontal surface. A horizontal force of 20.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x-axis). The object is now released from rest from this stretched position, and it subsequently undergoes simple harmonic oscillations. Find

(a) the force constant of the spring,

(b) the frequency of the oscillations, and

(d) Where does this maximum speed occur?

(e) Find the maximum acceleration of the object.

(f) Where does the maximum acceleration occur?

(g) Find the total energy of the oscillating system.

Find (h) the speed and (i) the acceleration of the object when its position is equal to one-third the maximum value.