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
olya-2409 [2.1K]
3 years ago
10

A car traveling along a road begins accelerating with a constant acceleration of 1.5 m/s2 in the direction of motion. after trav

eling 392 m at this acceleration, its speed is 35 m/s. determine the speed of the car when it began accelerating.
Physics
1 answer:
Art [367]3 years ago
7 0
In relating the variables or the parameters that are given in this item, we can make use of the equation,
                               2ad = Vf² - Vi²
where a is the acceleration, d is the distance, Vf and Vi are the final and initial velocities, respectively. If we substitute the known values to the equation,
                        2(1.5 m/s²)(392 m) = (35 m/s)² - Vi²
The value of Vi from the equation is 7 m/s. 
You might be interested in
Each tire on a car has a radius of 0.330 m and is rotating with an angular speed of 13.9 revolutions/s. Find the linear speed v
Lostsunrise [7]

Answer:

the linear speed of the car is 28.83 m/s

Explanation:

Given;

radius of the car, r = 0.33 m

angular speed of each tire, ω = 13.9 rev/s = 13.9 x 2π = 87.35 rad/s

The linear speed of the car is calculated as;

V = ωr

V = 87.35 rad/s x 0.33 m

V = 28.83 m/s

Therefore, the linear speed of the car is 28.83 m/s

3 0
3 years ago
How to make an uncharged particle positively charged
AlekseyPX

Answer:

If a neutral atom gains electrons, then it will become negatively charged. If a neutral atom loses electrons, then it become positively charged.

6 0
3 years ago
When a vertical beam of light passes through a transparent medium, the rate at which its intensity I decreases is proportional t
antoniya [11.8K]

Answer:

Intensity of beam 18 feet below the surface is about 0.02%

Explanation:

Using Lambert's law

Let dI / dt = kI, where k is a proportionality constant, I is intensity of incident light and t is thickness of the medium

then dI / I = kdt

taking log,

ln(I) = kt + ln C

I = Ce^kt

t=0=>I=I(0)=>C=I(0)

I = I(0)e^kt

t=3 & I=0.25I(0)=>0.25=e^3k

k = ln(0.25)/3

k = -1.386/3

k = -0.4621

I = I(0)e^(-0.4621t)

I(18) = I(0)e^(-0.4621*18)

I(18) = 0.00024413I(0)

Intensity of beam 18 feet below the surface is about 0.2%

3 0
3 years ago
Stars do not exist as separate entities in space, but instead belong to large groups of other stars that are held together by th
vlabodo [156]
I think the answer to your question is a galaxy. 
8 0
3 years ago
Find the equilibrant of two 10.0-N forces acting upon a body when the angle between the forces is 90° Solve graphically using a
bazaltina [42]

The equilibrant force of the two given forces is 14.14 N.

<h3 /><h3 /><h3>What is equilibrant force?</h3>
  • This is a single force that balances other given forces.

The given parameters:

  • First force, F₁ = 10 N
  • Second force, F₂ = 10 N
  • Angle between the forces, θ = 90⁰

The equilibrant force of the two given forces is calculated as follows;

F = \sqrt{F_1 ^2 + F_2 ^2} \\\\F = \sqrt{(10)^2 + (10)^2} \\\\F = 14.14 \ N

Thus, the equilibrant force of the two given forces is 14.14 N.

Learn more about equilibrant force here: brainly.com/question/8045102

5 0
3 years ago
Other questions:
  • Josie sees lightning off in the distance. A few seconds later she hears thunder. What can Josie conclude?
    14·2 answers
  • Identify the statement below that is true about a type of stress.
    8·2 answers
  • Displacement: Consider a deer that runs from point A to point B. The distance the deer runs can be greater than the magnitude of
    7·1 answer
  • Now suppose the initial velocity of the train is 4 m/s and the hill is 4 meters tall. If the train has a mass of 30000 kg, what
    6·1 answer
  • A typical value for the coefficent of quadratic air resistance on a cyclist is around c=0.20 N/m(m/s)2. Assuming thath the total
    13·1 answer
  • How do you calculate an object’s mechanical energy?
    5·2 answers
  • I am starting a PowerPoint presentation about Cat-Eye Syndrome. I don't know how to start my sentence. How can I start?
    8·1 answer
  • Using the periodic table, determine which element these characteristics MOST LIKELY describe.
    7·2 answers
  • What words does convection come from
    13·1 answer
  • What would land with more force, a feather moving at a certain acceleration, or a football moving with the same acceleration?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!