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
topjm [15]
3 years ago
9

A car that is standing still accelerates up a hill with a slope of 6.4% at an average acceleration of 2.93 ft/s^2. The hill is 1

2.42 miles long, and the final velocity of the car is 203 mph. How long does it take for the car to climb to the top of the hill?
Physics
1 answer:
alexgriva [62]3 years ago
5 0

Answer:

213 s

Explanation:

Slope is the ratio of change in vertical distance to change in horizontal distance.

Slope = vertical height / horizontal height

Therefore:

6.4% = vertical height / 12.42

vertical height = 6.4% * 12.42

vertical height = 0.8 miles

The distance travelled by the car (s) is:

s² = 0.8² + 12.42²

s² = 154.9

s = 12.45 miles

Acceleration (a) =  2.93 ft/s^2 = 0.00055 mile/s²

initial velocity (u) = 0, final velocity = 203 mph

Using:

s = ut + 0.5at²

12.45 = 0.5(0.00055)t²

t =213 s

You might be interested in
Anyone please helps me with this question... I'm stuck..
Zolol [24]
Highest fluid potential energy: answer A
Because the fluid is pushed upwards and potential energy is function of height. Since point A is the highest, there is the highest potential energy.

highest fluid pressure: answer C
This is because it is at the bottom where you have a hydrostatic pressure component

increasing fluid speed: answer B
This is because the section of the pipe is smaller and in order to have the same fluid flow rate the speed must increase
7 0
3 years ago
The movement of Earth's lithosphere is caused by convection within the ___ layer of the earth.
Elena-2011 [213]

Answer:

Mantle layer

Explanation:

The convection of the mantle layer is when energy in the form of heat is transferred from the interior of the earth to the top of the planet, creating convection currents.

This convection in the mantle causes movements in the earth's tectonic plates, which are found in the lithosphere, so the <u>movement of Eath's lithosphere is caused by convection within the mantle layer on the earth</u>. This plate movements can cause earthquakes or volcanic eruptions.

5 0
4 years ago
Read 2 more answers
Why do atoms form bonds by donating, accepting or sharing electrons with other atoms?
sineoko [7]

Answer:

atoms form bonds by donating, accepting or sharing electrons with other atoms in order to complete their valence shell electrons

hence , C. Bonding gives an atom the same number of protons as a noble gas.

Explanation:

i hope it helped

7 0
3 years ago
A wheel accelerates so that it's angular speed increases uniformly from 150 rads/s to 580 rads/s in 16 revolutions.Cakcjlate its
LenaWriter [7]

Answer:

A = 26.875 rad/s²

Explanation:

<u>Given the following data;</u>

Initial angular speed, Uw = 150 rads/s.

Final angular speed, Vw = 580 rads/s.

Time = 16 seconds.

To calculate the angular acceleration;

From kinematics equation;

At = Vw - Uw

Where;

  • A is the angular acceleration.
  • t is the time
  • Vw is the final angular speed.
  • Uw is the initial angular speed.

Substituting into the formula, we have;

A*16 = 580 - 150

16A = 430

A = 430/16

<em>A = 26.875 rad/s²</em>

3 0
3 years ago
Chuck Is driving from Chicago to Miami, in one hour he drives 120 km. What is Chuck’s average velocity?
Pie

Answer:

Chuck's average speed is 60.

8 0
3 years ago
Other questions:
  • Monochromatic light with wavelength 588 nm is incident on a slit with width 0.0351 mm. The distance from the slit to a screen is
    10·1 answer
  • What is the effect that distance has on gravity?
    8·1 answer
  • How does seismic waves cause earthquakes?
    15·2 answers
  • In physical science lab, Ben and Jerry added small pieces of magnesium to hydrochloric acid. They noticed that bubbles formed, t
    10·1 answer
  • What is watt equivalent to in terms of kg,m and s
    12·1 answer
  • Zinc metal is added to hydrochloric acid to generate hydrogen gas, which is collected over a liquid whose vapor pressure is the
    11·1 answer
  • Help please! Asap!!<br> (I selected some yes/no but I don't know the answer) <br> (Either yes or no)
    5·2 answers
  • Why it is easier to lift a small stone but harder to lift heavy one on the surface of Earth​
    13·1 answer
  • You and your friends are having a discussion about weight. He/she claims that he/she weighs less on the 100th floor of a buildin
    10·2 answers
  • A student is doing an investigation into the masses of different materials of different densities.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!