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
nadezda [96]
3 years ago
10

With what average speed must you drive your car if your average speed for the entire 23 km is to be 25 km/h?

Physics
1 answer:
aksik [14]3 years ago
5 0

Answer:

25km/h

Explanation:

This is a trick question, the average speed in this case does not really depend on calculation or extrapolation, it just refers to an event that is yet to occur,

In other words, if you want to achieve an average speed of 25km/h for 23km, then you should drive your car at a constant speed of 25km/h, any variation in speed may cause a change in your average speed at the end.

You might be interested in
At a playground, a child slides down a slide that makes a 42° angle with the horizontal direction. The coefficient of kinetic fr
kumpel [21]

Answer:

a = 5.1\ m/s^2

Explanation:

Given,

The angle of the slide=42^\circ

The mass of the child is= m

coefficient of friction = 0.20

when she slides down now apply Newton's law

ma =mg \sin\theta - f

ma = mg\sin \theta -\mu mg \cos \theta

therefore the acceleration

a=g \sin\theta -\mu gcos\theta

a=g[\sin \theta -\mu \cos \theta]

a=9.8\times [\sin 42^\circ -0.2\times \cos 42^\circ]

a = 5.1\ m/s^2

hence, the magnitude of acceleration during her sliding is equal to  a = 5.1\ m/s^2

4 0
4 years ago
Does any one know the answer
valina [46]
<span>Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past. The totality of fossils, both discovered and undiscovered, and their placement in fossiliferous (fossil-containing) rock formations and sedimentary layers (strata) is known as the fossil record</span>
6 0
3 years ago
PLEASE HELP ME
Snowcat [4.5K]

Answer:

Compound.

Explanation:

6 0
4 years ago
Read 2 more answers
How do I find the cosine of theta.
NNADVOKAT [17]

The value of cos θ in the given figure is 0.98.

<h3>What is cosine of an angle?</h3>

The cosine of an angle is defined as the sine of the complementary angle.

The complementary angle equals the given angle subtracted from a right angle, 90.

cos θ = sin(90 - θ)

For example, if the angle is 30°, then its complement is 60°

cos 30 = sin(90 - 30)

cos 30 = sin 60

0.866 = 0.866

<h3>Cosine of an angle with respect to sides of a right triangle</h3>

cos θ = adjacent side / hypotenuse side

adjacent side of the given right triangle is calculated as follows;

adj² = 10² - 2²

adj² = 100 - 4

adj² = 96

adj = √96

adj = 9.8

cos θ = 9.8/10

cos θ = 0.98

Thus, the value of cos θ in the given figure is 0.98.

Learn more about cosine of angles here: brainly.com/question/23720007

#SPJ1

5 0
1 year ago
Two balls, one twice as massive as the other, are dropped from the roof of a building (freefall). Just before hitting the ground
Katena32 [7]

KE= 1/2 mv^2

Kinetic Energy is equal to 1/2 x mass x velocity squared

The mass of the larger ball has TWICE
the kinetic energy. KE is directly proportional to the mass.

6 0
3 years ago
Other questions:
  • You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 1515 lb and was trav
    6·2 answers
  • A 4900 n gear box with a mass of 500kg falls to the ground. What is it’s acceleration due to gravity?
    15·1 answer
  • The springs of a 1700-kg car compress 5.0 mm when its 66-kg driver gets into the driver seat. If the car goes over a bump, what
    6·1 answer
  • Plz slv this answer​
    6·1 answer
  • A teen gave up smoking to improve her lifestyle what is another way to state what she did ?
    5·1 answer
  • The velocity of sound in air saturated with water vapour at 30°C
    10·1 answer
  • Electricity produces work when the electrons in a conductor
    8·2 answers
  • Study the distance-time graph, showing the distances that eight different things cover in 120 seconds or less. The letters below
    11·1 answer
  • A 20 kg box has an initial velocity of 2 m/s starting at the bottom of a 30-degree inclined plane. A person pushes on the box di
    8·1 answer
  • The focal length of a diverging lens is negative. If f = −26 cm or a particular diverging lens, where will the image be formed o
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!