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
Travka [436]
3 years ago
14

Which situation is contrary to Newton’s first law of motion? An object at rest begins to move when an external force is applied.

A moving object has a constant velocity under the influence of balanced forces. An object at rest stays at rest as long as unbalanced forces act on it. A moving object slows down when an external force is applied.
Physics
2 answers:
vaieri [72.5K]3 years ago
7 0

Newton's first law establishes the following:

An object will remain at rest or with uniform rectilinear motion unless an external force acts on it.

Therefore, we have that a case contrary to Newton's first law is:

Unbalanced forces acting on an object at rest, cause the object to remain at rest.

It is false, because if the forces are unbalanced, then the object will not remain at rest because external forces act on the object.

Answer:

A situation that is contrary to Newton's first law of motion is:

An object at rest stays at rest as long as unbalanced forces act on it.

Dmitrij [34]3 years ago
6 0

C. An object at rest stays at rest as long as unbalanced forces act on it.

You might be interested in
An 80kg parachutist jumps out of an airplane. Neglecting air friction, how fast will he be going after a 10 second free fall?
olganol [36]
If he is jumping you are adding force which means that you will be falling twice as fast
6 0
3 years ago
A tow truck drags a stalled car along a road. The chain makes an angle of 30° with the road and the tension in the chain is 1400
AURORKA [14]

Answer:

The work is done by the truck pulling the car 1 km is 1,212,436 J

Explanation:

Work is defined as the force that is applied on a body to move it from one point to another. When a force is applied, an energy transfer occurs. Then it can be said that work is energy in motion.

So work is one of the forms of energy transmission between bodies. To perform a job, you must exert a force on a body and it moves.

In the International System of Units, work is measured in Joule. A Joule is the work that a constant force of 1 Newton does on a body that moves 1 meter in the same direction and direction as the force. Then, Joule is equivalent to Newton per meter.

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

Work= Force*Distante* cos (θ)

In this case:

  • Force= 1,400 N= 1,400 kg*\frac{m}{s^{2} }
  • Distance= 1 km= 1,000 m
  • θ= Angle that exists between the direction of the force and the direction= 30°

Replacing:

Work= 1,400 N* 1,000 m* cos (30°)

Work= 1,212,435. 565 Joule≅ 1,212,436 J

<u><em> The work is done by the truck pulling the car 1 km is 1,212,436 J</em></u>

7 0
3 years ago
What is projectile motion caused by?
Lemur [1.5K]
Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.
6 0
3 years ago
Read 2 more answers
What is the name for the bunched up region of<br> air particles in the sound wave?
Leviafan [203]

Answer:

These regions are known as compressions and rarefactions respectively. The compressions are regions of high air pressure while the rarefactions are regions of low air pressure.

Explanation:

4 0
3 years ago
Read 2 more answers
A quantity found by multiplying the force by the distance moved
Andrej [43]
The quantity that is calculated from the product of the force and the distance traveled due to the force is called work.  It has SI units of Joules (J) which is equivalent to Newton-meter (N-m). It is the energy that happens when an object is being moved by an external force.
7 0
3 years ago
Other questions:
  • How does the law of conversation of energy apply to machines
    9·2 answers
  • Ball is dropped from the height H the total distance covered in last second of its motion is equal to distance covered in first
    11·1 answer
  • Which of these is a cash crop?<br><br> A. Cucumbers <br> B. Strawberries<br> C. Latex<br> D. Grass
    7·2 answers
  • Please solve it ,,,,,,,,,,................................
    13·1 answer
  • In a battery powered flashlight, how is energy converted
    11·1 answer
  • The sine of the incident angle is 0.217; the sine of the refracted angle is 0.173. Calculate the index of refraction.
    7·2 answers
  • A bike travels at 3.0 m/s, and then accelerates to a speed of
    5·1 answer
  • Why do we use the hydrogen spectrum to identify if a star is red or blue<br> shifted? *
    10·1 answer
  • I'm studying the equilibrium of forces so hard that I got confused for a sec. Is the force due to gravity included in summing up
    7·1 answer
  • The Atwood’s machine shown consists of two blocks of mass m1 and m2 that are connected by a light string that passes over a pull
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!