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
irakobra [83]
2 years ago
14

can someone describe how someone is moving-- have examples of positive velocity negative velocity and acceleration and the perso

n being at rest. Can someone help me asap i need Help!! making it into a story
Physics
1 answer:
Rama09 [41]2 years ago
4 0

Assume the motion when you are in the car or in the school bus to go to the school.


To describe the motion the first thing you need is a point of reference. Assume this is your house.


This should be a description:

  • When you are sitting and the car has not started to move you are at rest.
  • The car starts moving from rest, gaining speed, accelerating. You start to move away from your house, with a positive velocity (from you house to your school) and positive acceleration (velocity increases).
  • The car reaches a limit speed of 40mph, and then moves at constant speed. The motion is uniform, the velocity is constant, positive, since you move in the same direction), and the acceleration is zero.
  • When the car approaches the school, the driver starts to slow down. Then, you speed is lower but yet the velocity is positive, as you are going in the same direction. The acceleration is negative because it is in the opposite direction of the motion.
  • When the car stops, you are again at rest: zero velocity and zero acceleration.
  • In all the path your velocity was positive, constant at times (zero acceleration) and variable at others (accelerating or decelerating).
  • When you comeback home, then you can start to compute negative velocities, as you will be decreasing the distance from your point of reference (your house).


You might be interested in
Will give brainiest to best answer
Gala2k [10]

Answer:

t

Explanation:

6 0
2 years ago
An 81.5-kg man stands on a horizontal surface.
Elza [17]

Answer:

a)V= 0.0827 m³

b)P=181.11 x 10²  N/m²

Explanation:

Given that

m = 81.5 kg

Density ,ρ = 985 kg/m³

As we know that

Mass = Volume x Density

81.5 = V x 985

V= 0.0827 m³

The force exerted by weight = m g

 F= m g= 81.5 x 10 = 815 N      ( Take ,g= 10 m/s²)

Area ,A= 4.5 x 10⁻² m²

The Pressure P

P=\dfrac{F}{A}

P = \dfrac{815}{4.5\times 10^{-2}}\ N/m^2

P=181.11 x 10²  N/m²

4 0
3 years ago
What does Coulombs law state?
dedylja [7]
Coulomb's law states<span> that: The magnitude of the electrostatic force of interaction between two point charges is directly proportional to the scalar multiplication of the magnitudes of charges and inversely proportional to the square of the distance between them.
</span>
7 0
3 years ago
True or false, only a radioactive isotope will have a half-life
maks197457 [2]
False not radioactive isotope will have a half-life
5 0
2 years ago
565,900 seconds into days​
alukav5142 [94]

Answer:

6

Explanation:

4 0
3 years ago
Other questions:
  • How do the tension of the cord and the force of gravity affect a pendulum
    14·1 answer
  • When asked how to create an electromagnet, the best answer would be, "You can create an electromagnet by
    9·2 answers
  • Aluminum has 13 energy levels. How many electrons are found in the outermost energy level for this atom? Which energy level is t
    13·1 answer
  • The product of the synthesis reaction between sodium and chlorine gas is ?
    5·1 answer
  • An object with a mass of 62.5 kg accelerates 12.3 m/s2 when an unknown force is applied to it. What is the amount of the force?
    6·1 answer
  • HURRY ! THE BEST I WILL GIVE THE BRAINLIEST​
    8·1 answer
  • A rifle bullet leaves the barrel at 1500 meters per second. If it does not slow down or hit anything, how far can it travel in h
    14·1 answer
  • A car accelerates uniformly from rest and reaches a speed of 21.9 m/s in 8.99 s. Assume the diameter of a tire is 57.5 cm. (a) F
    5·1 answer
  • Giving brainliest someone help pls
    10·2 answers
  • The gravitation force between two masses (36n if the distance between masses is tripled, the force of gravity will be).
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!