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
guapka [62]
3 years ago
11

How can we tell when forces are acting on an object (science)

Physics
1 answer:
iren [92.7K]3 years ago
4 0

If an object's speed changes, or if it changes the direction it's moving in,
then there must be forces acting on it. There is no other way for any of
these things to happen.

Once in a while, there may be <em><u>a group</u></em> of forces (two or more) acting on
an object, and the group of forces may turn out to be "balanced".  When
that happens, the object's speed will remain constant, and ... if the speed
is not zero ... it will continue moving in a straight line.  In that case, it's not
possible to tell by looking at it whether there are any forces acting on it. 


You might be interested in
A stone is dropped from from rest at the top of a mine shaft. It takes 95 seconds for the stone to fall to the bottom of the min
Marianna [84]

Distance of fall from rest,
without air resistance              =  (1/2) (gravity) (time)²

                                             = (1/2) (9.8 m/s²) (95 sec)²

                                             =  (4.9 m/s²) (9,025 sec²)

                                             =        44,222.5 meters  .

The depth of the mine shaft is five times the height of Mt. Everest !


6 0
3 years ago
A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at
igomit [66]

The complete question is as follows:

A cow is given a growth hormone  and then compared to another cow that  was not given a growth hormone. Both  cows were weighed at 2 years. What is the independent variable?

if the cow is given growth hormone or not  

weight of the cow

same cows  

type of growth hormone

Answer:

The correct answer is - if the cow is given growth hormone or no

Explanation:

The independent variable is here is if the growth hormone is given or not as the variable which is subject to change or manipulated during an investigation and affects the dependent variable is known as the independent variable.

Due to this independent variable manipulation the weight of the cows might be different which makes the weights as the dependent variable.

7 0
3 years ago
The basic unit of electric current is the <br> .
Masja [62]
The Ampere (A). You could literally google to be more efficient, all the same to me tho
4 0
3 years ago
Read 2 more answers
Explain how forces of attraction and repulsion exist within an atom. describe how an electric charge is developed by friction or
dalvyx [7]

There are three kinds of forces within the atom:

  i) Electromagnetic force of attraction between the electrons and protons

  ii) Electromagnetic force of repulsion between the protons or weak nuclear force

  iii) Strong nuclear force between the electrons and protons

<h3>What is nuclear force?</h3>

The electromagnetic force of attraction:

  • Electrons circle in the orbits above the nucleus. There exists an electromagnetic force of pull between the electrons and protons. That’s why electrons do not depart the atom.

Weak nuclear force:

  • It is an electromagnetic significance of revulsion between the protons in the nucleus of the atoms.

Strong nuclear force:

  • This force is strongest from all the fundamental details and exists between the protons and neutrons in the nucleus of an atom. This pressure overcomes the weak nuclear force and does not allow protons to stray out.

To learn more about nuclear force, refer to:
brainly.com/question/8695581

#SPJ4

3 0
2 years ago
Arightward force of 302 N is applied to a 28.6-kg crate to accelerate it across the floor. What will its acceleration be?
Musya8 [376]

Answer:

a \approx 10.6 m/s²

Explanation:

Since F = ma (Force = mass * acceleration), acceleration would be...

a = F/m

a = 302 N/28.6

a \approx 10.6 m/s²

8 0
3 years ago
Other questions:
  • How does the movement of particles of matter change when temperature decreases
    12·1 answer
  • A 500g object falls off a cliff and losers 100 J from its gravitational potential energy store. if the gravitational field stren
    12·1 answer
  • The magnitude of the vectors f~ is 27 n, the force on the right is applied at an angle 58◦ and the the mass of the block is 54 k
    11·1 answer
  • How does the mass of a bowling ball that has been rolled down the lane affect the kinetic energy? A) The kinetic energy does not
    12·2 answers
  • Is it inhumane to keep a cat in one room?
    5·1 answer
  • A soccer ball is kicked from the ground at an angle of θ = 42 degrees with respect to the horizontal. The ball is in the air for
    7·1 answer
  • A 6-N force pushes to the right on a 3-kg object for 8 seconds.
    10·2 answers
  • The color of a substance is a physical property. Please select the best answer from the choices provided T F
    11·2 answers
  • What do you need in order to change the velocity of an object?
    14·1 answer
  • If force decreases, what must happen to distance for work to remain the same?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!