1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dimulka [17.4K]
3 years ago
15

After the box comes to rest at position x1, a person starts pushing the box, giving it a speed v1. when the box reaches position

x2 (where x2>x1), how much work wp has the person done on the box? assume that the box reaches x2 after the person has accelerated it from rest to speed v1. express the work in terms of m, v0, x1, x2, and v1.
Physics
1 answer:
KiRa [710]3 years ago
3 0

As we know by work energy theorem

total work done = change in kinetic energy

so here we can say that wok done on the box will be equal to the change in kinetic energy of the system

W_p = KE_f - KE_i

initial the box is at rest at position x = x1

so initial kinetic energy will be ZERO

at final position x = x2 final kinetic energy is given as

KE_f = \frac{1}{2}mv_1^2

now work done is given as

W_p = \frac{1}{2}mv_1^2 - 0

so we can say

W_p = \frac{1}{2}mv_1^2

so above is the work done on the box to slide it from x1 to x2

You might be interested in
How fast can a man run in miles per hour?
ExtremeBDS [4]
Depends on how well built he is probably for the average American 8 MPH
6 0
3 years ago
Momentum=mass X velocity
Sliva [168]

Answer:

Hope it helped

stay safe, mark BRAINLIEST

6 0
2 years ago
Two dogs are pulling a disk, but the disk is not moving. The disk does not move because the forces are (select one: unbalanced,
tiny-mole [99]

Answer:

balanced?

Explanation:

because if it wasn't moving that means they are pulling at a similar strength

8 0
3 years ago
Read 2 more answers
A baby carriage is rolling down a hill at 18 m/s. If the carriage has 90J of kinetic energy, what is the mass of the carriage? a
grin007 [14]

Answer:

why did the parents let go of their child-

Explanation:

A 5 kg, because 90 / 18 is 5

6 0
3 years ago
Read 2 more answers
What would happen to the moon if earth stopped exerting the force of gravity on it?
Mila [183]
There are two equal forces of gravity between the Earth and the Moon.
One force pulls the Moon toward the Earth.
The other force pulls the Earth toward the Moon.

If only this gravity suddenly switched off, then the moon would
continue to orbit the Sun, very much as it does now.

If ALL gravity suddenly switched off, then . . .

-- the Moon would stop orbiting the Earth and would sail away, in
a straight line and at the speed it had when gravity disappeared;

-- the Earth would stop orbiting the Sun and would sail away, in
a straight line and at the speed it had when gravity disappeared;

-- all the gases surrounding the Earth ... which we call "air" ... would
start drifting away, and expanding into a giant cloud of gas, and stop
being an atmosphere;

-- the Sun would completely fall apart, expand into a giant cloud of gas,
and stop being a star.
6 0
3 years ago
Read 2 more answers
Other questions:
  • How much force is needed to stop a 120-kg ice-hockey player if he decelerates at 20 m/s²?
    14·1 answer
  • Please help!!!!
    9·1 answer
  • Explain the connections between reactants, products, and limiting reactant.
    9·1 answer
  • Can someone tell me the acceleration?
    7·1 answer
  • What is ham, I'm totally serious?
    12·2 answers
  • You have two contentious friends, Chris and Pat, and you’ve quickly discovered that they need you to resolve arguments they have
    12·1 answer
  • A 2.0-kg object moving 5.0 m/s collides with and sticks to an 8.0-kg object initially at rest. Determine the kinetic energy lost
    11·1 answer
  • A conditioning program should begin at a low to moderate level. True or False
    13·1 answer
  • Mia wanted to know how Earth’s movements created new landforms. She decided to read about folded mountains and their characteris
    7·2 answers
  • Do electromagnetic waves require matter to travel?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!