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
torisob [31]
3 years ago
6

A 1000-kg car is driving toward the north along a straight horizontal road at a speed of 20.0 m/s. The driver applies the brakes

and the car comes to a rest uniformly in a distance of 240 m. What are the magnitude and direction of the net force applied to the car to bring it to rest?
Physics
1 answer:
Nitella [24]3 years ago
3 0

Answer:

The value of F= - 830 N

Since the force is negative, it implies direction of the force applied was due south.

Explanation:

Given data:

Mass = 1000-kg

Distance, d = 240 m

Initial velocity, v1 = 20.0 m/s

Final velocity, v2 = 0 (since the car came to rest after brake was applied)

v2²= v1² + 2ad (using one of the equation of motion)

0=  20² + (2 x a x  240)

0= 400 + 480 a

a = - 400/480

a = - 0.83 m/s²

Then, imputing the value of a into

F = ma

F = 1000 kg x ( - 0.83 m/s²)

F= - 830 N

The car was driving toward the north, and since the force is negative, it implies direction of the force applied was due south.

You might be interested in
A circuit component with a high resistance will have a low electric current.
Zepler [3.9K]
You haven't said what 'high' resistance or 'low' current means, so there's way not enough info to nail the statement as true or false. The most precise answer is "certainly could be but not necessarily". Anyway, the current in the circuit depends on BOTH the resistance AND the voltage. So without knowing the voltage too, you can't say anything about the current.
6 0
3 years ago
What is being transferred as you do work?<br> A. Energy<br> B. Power<br> C. Heat<br> D. Strength
r-ruslan [8.4K]

\huge\bold{\purple{\bold{⚡A. Energy⚡}}}

\huge\underline\mathtt\colorbox{cyan}{Reason:}

When a force causes a body to move, work is done on the object by the force. Work is the measure of the energy transfer when a force 'F' moves an object through a distance 'd'. So we say that energy is transferred from one energy store to another when work is done, and therefore, energy transferred = work done.

4 0
3 years ago
Read 2 more answers
Help, please!!!!!<br> I just need help putting the vocab word in the box where it belongs.
Ber [7]

here's the first part but for the 2nd one all I know is that the word "compression" goes on the spirals that are closer together.

hope this helps!

8 0
2 years ago
Please help me, this is a physics test.
sweet-ann [11.9K]

Answer:

a = 2 [m/s²]

Explanation:

To be able to solve this problem we must make it clear that the starting point when the time is equal to zero, the velocity is 5 [m/s] and when three seconds have passed the velocity is 11 [m/s], this point is the final point or the final velocity.

We can use the following equation.

v_{f}=v_{o}+a*t\\

where:

Vf = final velocity = 11 [m/s]

Vo = initial velocity = 5 [m/s]

a = acceleration [m/s²]

t = time = 3 [s]

11 = 5 + a*3\\6=3*a\\a= 2[m/s^{2} ]

4 0
3 years ago
19. The particles in an object move very quickly and are spread apart. Then they move slower and get slower and get closer toget
svlad2 [7]

Answer:

The transformation went from a gas to a solid which is a Deposition

Explanation:

Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.

4 0
3 years ago
Other questions:
  • What is the correct order of the structures of the motor neuron?
    6·1 answer
  • which of the seasons is celebrated by many northern cultures with festivals, often symbolizing rebirth?
    12·2 answers
  • How much work is required to lift an object with a mass of 5.0 kilograms to a height of 3.5 meters?
    15·2 answers
  • What mass of silver (in grams) is solidified when 749 joules of heat are released by a sample of molten silver at its freezing p
    7·2 answers
  • What is the energy of a photon whose frequency is 5.0x10^14 hz
    5·1 answer
  • Things accelerate at the same rate, regardless of mass, due to the force of gravity. True or False?
    12·1 answer
  • What is artificial insemination as used in animal production
    8·1 answer
  • Closed clusters are groups of closely grouped stars that are located along the spiral disk of a galaxy.
    13·2 answers
  • The bold type sa matanda​
    9·1 answer
  • When you cook a marshmallow on a metal poker tool over an open flame, energy is transferred. Identify the three different ways t
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!