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
Nana76 [90]
3 years ago
8

What is the displacement of a car traveling 14 km North on I985 then 20 km South on I985?

Physics
1 answer:
sukhopar [10]3 years ago
8 0

Displacement = (14-20) Km = -6 Km

The displacement of a car is -6 Km South

You might be interested in
Researchers have found that the larvae of all North American firefly species glow as a warning sign to ward off predators. Howev
Marrrta [24]

Explanation:

The theory of speciation confirms what happens with fireflies, only fireflies that are part of the same species can reproduce among themselves, which means that fireflies that use pheromones as mating signals will attract fireflies that use that same form or mechanism of reproduction.

Some mechanisms that allow this type of differentiation or speciation to occur are: seasonal or geographic isolation and sexual isolation due to behavior or conduct.

Speciation allows the formation of new populations of organisms that share the same physiological and genetic characteristics. Therefore, the adult fireflies that shine as a mating signal are possibly found in the same geographical position and their physiological and genetic characteristics are compatible with those of his own species.

7 0
3 years ago
Which source is considered a primary source of scientific information? an original research article in a scientific journal a re
Nitella [24]
The primary source would be the original article published in a scientific journal. All other choices would be based on information from the original article.

Newspapers would only pick up the information from the journal itself, or from the authors. Books follow after the original article, after it has gained momentum among the research community. The public lecture at a museum would be based on work from the journal article.
6 0
3 years ago
Read 2 more answers
DEFINE HEAT CAPACITY
Rudiy27
The number of heat units needed to raise the temperature of a body by one degree.
4 0
3 years ago
Read 2 more answers
If he leaves the ramp with a speed of 31.0 m/s and has a speed of 29.5 m/s at the top of his trajectory, determine his maximum h
raketka [301]

Answer:

The maximum height reached is 4.63 m.

Explanation:

Given:

Initial speed of the man (u) = 31.0 m/s

Speed at the top of trajectory (u_x) = 29.5 m/s

Acceleration due to gravity (g) = 9.8 m/s²

When the man reaches the top of the trajectory, the vertical component of velocity becomes zero and hence only horizontal component of velocity acts on him.

Also, since there is no net force acting in the horizontal direction, the acceleration is zero in the horizontal direction from Newton's second law. Thus, the horizontal component of velocity always remains the same.

So, speed at the top of trajectory is nothing but the horizontal component of initial velocity.

Now, initial velocity can be rewritten in terms of its components as:

u^2=u_x^2+u_y^2

Where, u_x\ and\ u_y are the initial horizontal and vertical velocities of the man.

Now, plug in the given values and simplify. This gives,

(31.0)^2=(29.5)^2+u_y^2\\\\961=870.25+u_y^2\\\\u_y^2=961-870.25\\\\u_y^2=90.75\ m^2/s^2--------1

Now, we know that, for a projectile motion, the maximum height is given as:

H=\frac{u_y^2}{2g}

Plug in the value from equation (1) and 9.8 for 'g' to solve for 'H'. This gives,

H=\frac{90.75}{2\times 9.8}\\\\H=4.63\ m

Therefore, the maximum height reached is 4.63 m.

3 0
3 years ago
What is meant by an acceleration of negative 2metre per second square​
soldi70 [24.7K]

means that a body is in motion, and its velocity is measured in meters per second. And, that velocity is increasing by two meters per second, every second.

8 0
3 years ago
Read 2 more answers
Other questions:
  • 1.
    6·1 answer
  • Is a force pushing up on an object as gravity is pulling down?
    12·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
    6·2 answers
  • what 2 things can you do if you wanted to decrease an object's gravitational force? i'll mark brainliest!
    15·1 answer
  • How do you find distance on a velocity time graph?
    10·1 answer
  • Chemists use the periodic table to organize the elements. What are some ways in
    12·1 answer
  • A bicycle rides in a straight line at 1 km at 10
    13·1 answer
  • ( Basic physics science question)
    9·1 answer
  • What occurs in the space when a massive object undergoes a change in its motion?
    8·1 answer
  • Q/C S Starting with the definition of work, prove that at every point on an equipotential surface, the surface must be perpendic
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!