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
tino4ka555 [31]
3 years ago
5

A student conducts an experiment in which an object travels across a horizontal surface while for 2 s a net force is applied to

a 2 kg object that initially travels with a speed of 0.5 m/s. Data collected from the experiment are used to create the graph of the magnitude of the applied force exerted on the object as a function of time is shown. All frictional forces are considered to be negligible. Can the student use the graph and the known data to determine the momentum of the object after the force has been applied?
Yes, because the average force exerted on the object can be used with the time interval of 2 s to determine the change in momentum of the object by using Δp⃗ =F⃗ Δt.


Yes, because the area bound by the best-fit line and the horizontal axis from 0 s to 2 s can be used to determine the change in momentum of the object.


No, because the data is too scattered to determine the average force that is exerted on the object.


No, because the student needs to know the direction that the force is applied to the object because the applied force will be in the same direction as the change in momentum of the object.
Physics
1 answer:
erma4kov [3.2K]3 years ago
3 0

Answer:

  D.  No, because the student needs to know the direction that the force is applied

Explanation:

The change in momentum depends on the direction of the force as well as its magnitude. Since the graph only supplies force magnitude information, it is insufficient to allow the student to calculate the change in momentum.

You might be interested in
The shortest wavelengths that we can see are experienced as
max2010maxim [7]
The shortest wavelengths that you can see are experienced
as violet light, or whatever is the last color you can see on the
"blue end" of the spectrum.  It's not exactly the same for all eyes.
4 0
4 years ago
Why does the hood of a car heat up after the car has been running for a while? A) According to the fourth law of thermodynamics,
Svetlanka [38]

Answer:

C) According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

Explanation:

A) According to the fourth law of thermodynamics, the temperature of the other parts of the car increases due to the coolant used for the engine.  

B) According to the first law of thermodynamics, the hood of the car heats up using heat from the surroundings in-order to achieve thermal equilibrium with the engine.  

C) According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

D) According to the third law of thermodynamics, the increase in the velocity of the car changes the entropy of the tires. To balance this change, the temperature of the other parts is increased.

6 0
4 years ago
Read 2 more answers
When finding net force, why must you know the directions of the forces acting on an object?
Mariulka [41]
<h3>One reason we should know what the directions of the forces acting on an object is so we can know if we have to add or subtract. same = add together, opposite = subtract from each other. Also if we don't pay attention to the direction the Net force will be wont be accurate. There will be factors that will upset the calculation.So we must know the direction of the two forces because we have to know if we are adding or subtracting and if the answer is accurate. </h3>

<em>I hope this helps!.</em>

8 0
3 years ago
Covalent bonds form because most atoms seek to have how many electrons in their most outer shell?
suter [353]

Answer: 8

Explanation:

Non metals which have 4 electrons in the outer shell i.e in the valence shell bond with the other similar non metals having 4 electrons in their valence shell. This bond is known as covalent bond in which the two atoms share their valence electrons with each other in order to complete their valence shell. These atoms seeks to have 8 electrons in order to attain noble gas configuration.

4 0
4 years ago
Friction and normal force are examples of
siniylev [52]

Answer:

Friction is a force that tends to oppose the relative motion between two bodies in contact. Frictional force always acts on a moving body from the direction opposite to the direction of motion. It opposes the motion, and therefore, helps to reduce the speed of the moving object. It is a contact force.

3 0
2 years ago
Other questions:
  • _______________ involves removing the top layer of earth, mining the coal, and then replacing the earth back on the surface
    8·1 answer
  • A 0.155 kg arrow is shot upward
    14·1 answer
  • Air resistance is a nonconservative force. It always opposes the motion of an object. An airplane flies from New York to Atlanta
    7·1 answer
  • Which of the following are not results of the force of gravity
    11·1 answer
  • Heliocentric theory:
    5·2 answers
  • A superball with a mass m = 61.6 g is dropped from a height h = [02]____________________ m. It hits the floor and then rebounds
    7·1 answer
  • How much voltage must be applied across a 0.20 Ω wire in order to create a 30 A current? (Please show work for it too)
    7·2 answers
  • What type of reaction is being shown in this energy diagram?
    12·1 answer
  • Out line two application of reflactive index​
    13·1 answer
  • A jet aircraft is traveling at 262 m/s in hor-
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!