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
antoniya [11.8K]
3 years ago
13

A speeding Thunderbird left skid marks on the road that were 76.7 m long when it came to a stop. If the acceleration of the car

was -10 m/s2, how fast was the car initially going?
Physics
1 answer:
FrozenT [24]3 years ago
4 0

Answer: 39.2 m/s

Explanation:

You can use the kinematic equation:

v_f^2=v_i^2+2a*d

We know the final velocity because it says it came to a stop. So now all we gotta do is plug in.

0^2=v_i^2+2(-10)(76.7)\\v_i^2=1,534\\v_i=\sqrt{1534} \\=39.166 m/s

You might be interested in
what is the position of centre of curvature for concave and convex mirror show with the help of diagram if you can​
Anon25 [30]

it is the point at infinity where it is at a distance from the curve equal to the radius of curvature lying on the normal vector. Sorry no diagram

8 0
2 years ago
Imagine your teacher asks you to design an experiment where you test the effect of temperature on the growth of a plant. You hav
Dmitry_Shevchenko [17]

Answer:

The correct answer will be-

1. Dependent variable- The growth of plant in the form of height

2. Independent variable- different temperature

3. Constant variable- The amount of water, amount of sunlight, type of soil.

Explanation:

A Scientific experiment must include three types of variables which are: The independent, dependent and the constant variable.

1. Independent variable- The variable which can be modified or changed either on its own or manually. The variable directly influences the variable to be studied. In the given condition, the independent variable is the different temperature provided to the plants.

2. Dependent variable- The variable which is being studied in the experiment and directly influenced by the independent variable is the growth of the plant which is measured in the form of height.

3. Constant variable- The variable which is kept constant throughout the experiment and remains the same which could be the amount of water amount of sunlight and type of soil.

4 0
3 years ago
Electromagnetic waves travel through space at a speed of _____.
Veseljchak [2.6K]
The answer is C 300,000 kilometers per second

6 0
2 years ago
Read 2 more answers
While playing a scavenger hunt game, Anthony walks 48.0 m to the south and then walks 12.0 m to the west. What single straight-l
Alenkasestr [34]
As these are distances created by moving in a straight line, using a trigonometric analysis can solve the missing single straight-line displacement. Looking at the 48m and 12m movements as legs of a triangle, obtaining the hypotenuse using the pythagorean theorem will yield us the correct answer.
This is shown below:

c^2 = 48^2 + 12^2
c = sqrt(2304 + 144)
c = sqrt(2448)
c = 49.48 m

To obtain the angle at which Anthony walks 49.48, we obtain the arc tangent of (12/48). This is shown below:

arc tan (12/48) =14.04 degrees.

Therefore, Anthony could have walked 49.48 m towards the S 14.04 W direction.
4 0
2 years ago
An object has a 600 N force pushing it to the right, while a 700 N force pushes in the opposite direction. Gravity also acts on
nordsb [41]
Left is the answer 3
6 0
2 years ago
Read 2 more answers
Other questions:
  • A seismographic station receives S and P waves from an earthquake, separated in time by 17.3 s. Assume the waves have traveled o
    12·1 answer
  • Why does a balloon stick to a wall questions and problems answers?
    9·1 answer
  • How does a planet’s size affect the length of a rotation of that planet
    6·1 answer
  • A rotating door is made from four rectangular sections, as indicated in the drawing. the mass of each section is 86 kg. a person
    10·1 answer
  • With what minimum speed must you toss a 130 gg ball straight up to just touch the 15-mm-high roof of the gymnasium if you releas
    14·1 answer
  • Two identical balls are at rest and side by side at the top of a hill. You let one ball, A, start rolling down the hill. A littl
    14·1 answer
  • The built-up beam is formed by welding together the thin plates of thickness 5 mm. determine the location of the shear center o.
    15·1 answer
  • Light passes through a single slit. If the width of the slit is reduced, what happens to the width of the central bright fringe
    13·1 answer
  • In what unit do we measure the work done by a force
    9·1 answer
  • PLEASE HELP ME WITH THIS ONE QUESTION
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!