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
belka [17]
3 years ago
5

What is a real life situation that demonstrates 1st Newton law for an object in move?

Physics
1 answer:
qwelly [4]3 years ago
4 0
Put your math or physics textbook on the table, and just leave it there. Notice how it doesn’t move. Newton’s first law states simply that an object at rest will stay at rest, and an object in motion will stay in motion *when acted on by an outside force*. To see this in action, apply a force (a push) to the textbook and notice how (unsurprisingly) it starts moving! When you stop pushing, the textbook stops, too. This seems to violate Newton’s first law, but it’s actually because there’s another force at play pushing back: friction.

In the case of the textbook, the force you applied with the push was necessary to overcome the force of friction to get it moving, but if you were to give a textbook that same push in space, it would just drift on in a straight line at the same speed for as long as it took for something else to push on or pull at it.
You might be interested in
Testing shows that a sample of wood from an artifact contains 25% of the
daser333 [38]

Answer:

The artifact is 11,460 years old.

<u>Explanation</u>:

Given that,

The half life of the carbon-14 is 5730  years and we are left with 255 of the sample of wood from an arti-fact.

So it takes 5730 years for the sample to reduce into half

Initially there will be 100% of the sample so

after first 5730 years, the sample reduces into 50% percent

Now the left 50% sample will take another 5730 years to decay into half of its amount.

after next 5730 years  the sample reduces into 25% percent

So totally after 2 half-life the sample reduces into 25%

That is (5730 +5730) years = 11460 years

5 0
3 years ago
Read 2 more answers
A 25 kg block is held against a compressed spring and then the spring is allowed to decompress giving the block a velocity. The
Alex787 [66]

Answer:

h=18.05 cm

Explanation:

Given that

m= 25 kg

K= 1300 N/m

x=26.4 cm

θ= 19.5 ∘

When the block just leave the spring then the speed of block = v m/s

From energy conservation

\dfrac{1}{2}Kx^2=\dfrac{1}{2}mv^2

Kx^2=mv^2

v=\sqrt{\dfrac{kx^2}{m}}

By putting the values

v=\sqrt{\dfrac{kx^2}{m}}

v=\sqrt{\dfrac{1300\times 0.264^2}{25}}

v=1.9 m/s

When block reach at the maximum height(h) position then the final speed of the block will be zero.

We know that

V_f^2=V_i^2-2gh

By putting the values

0^2=1.9^2-2\times 10\times h

h=0.1805 m

h=18.05 cm

4 0
3 years ago
Which word best describes this?<br> Particle<br> O Atom<br> O Molecule<br> O Substance
skelet666 [1.2K]
That’s an atom

I hope that helped
3 0
2 years ago
Black widow (m=57000 g) shovels snow, holding the shovel at a 40 degree angle above the ground. If she uses a constant force of
Dima020 [189]

Answer:

She does a work of 689.44 J in the snow.

Explanation:

A force is said to do work when it alters the state of motion of a body. The work of the force on that body will be equivalent to the energy needed to move it.

In other words, Work is a form of energy transmission between bodies. In order to carry out work, a force must be exerted on a body and it must move.

The work is equal to the product of the force times the distance and the cosine of the angle that exists between the direction of the force and the direction that the moving point or object travels:

W= F*d* cos Ф

Work W is measured in joules (J), force is measured in newtons (N), and displacement in meters (m).

In this case:

  • F= 180 N
  • d=5 m
  • Ф= 40 degrees

Replacing:

W= 180 N*5 m* cos 40

Solving:

W= 689.44 J

<u><em>She does a work of 689.44 J in the snow.</em></u>

7 0
3 years ago
20 points?!!!!!!<br><br>please help I need this asap
IgorLugansk [536]
F - F_f = ma

We are trying to find F.

F - 15 = 30(1.5)

F - 15 = 45

F = 60 N
6 0
3 years ago
Other questions:
  • What forces contribute to density
    10·1 answer
  • Convert 0.000238 m to cm
    14·1 answer
  • What will be the length of a half wavelength dipole antenna operating at 10GHz?
    9·1 answer
  • What happens to light when it changes speed?
    15·1 answer
  • Four equal masses m are so small they can be treated as points, and they are equally spaced along a long, stiff wire of neglible
    11·1 answer
  • An airplane lands with an initial velocity of 60 m/s and then slows down at 1.5 m/s2 for 30 seconds. What is its final velocity?
    12·1 answer
  • A solid wood door 1.00 m wide and 2.00 m high is hinged along one side and has a total mass of 45.0kg . Initially open and at re
    14·1 answer
  • HELP MEEE
    11·1 answer
  • Quien me ayuda en una tarea de matemáticas de una figura geométrica que no se cómo se llama​
    12·2 answers
  • Which material is more closely related to the styrofoam? a. heat exchanger b. diffuser c. insulator d. electrical conductor
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!