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
taurus [48]
3 years ago
8

a rocket initially at rest on the ground lifts off vertically with a constant acceleration of 2.0 x 10^1 meters per second^2. Ho

w long will it take the rocket to reach an altitude of 9.0 x 10^3 meters ?
Physics
1 answer:
xenn [34]3 years ago
7 0

Here's the formula for the distance covered by an accelerating body in some amount of time ' T '. This formula is incredibly simple but incredibly useful. It pops up so often in Physics that you really should memorize it:

D = 1/2 a T²

Distance = (1/2)·(acceleration)·(time²)

This question gives us the acceleration and the distance, and we want to find the time.

(9,000 m) = (1/2) (20 m/s²) (time²)

(9,000 m) = (10 m/s²) (time²)

Divide each side by 10 m/s²:

(9,000 m) / (10 m/s²) = (time²)

900 s² = time²

Square root each side:

<em>T = 30 seconds</em>

You might be interested in
The Sun has a mass of 1.99x10^30 kg and a radius of 6.96x10^8 m. Calculate the acceleration due to gravity, in meters per second
just olya [345]

Answer:

g=274\ m/s^2

Explanation:

Mass of the Sun, M=1.99\times 10^{30}\ kg

The radius of the Sun, r=6.96\times 10^8\ m

We need to find the acceleration due to gravity on the surface of the Sun. It is given by the formula as follows :

g=\dfrac{GM}{r^2}\\\\g=\dfrac{6.67\times 10^{-11}\times 1.99\times 10^{30}}{(6.96\times 10^8)^2}\\\\g=274\ m/s^2

So, the value of acceleration due to gravity on the Sun is 274\ m/s^2.

8 0
3 years ago
Electronegativity___.
Paul [167]
Whats the question here ?
6 0
3 years ago
The area of a piston of a force pump is 8 X 10⁴m². What force must be
prisoha [69]

Answer:

Force of 37.44 * 10^{8} Kgm/s^2 must be  applied to the piston to raise oil to a height of 6.0 m

Explanation:

As we know,

Pressure is the force per unit area

Or P = \frac{F}{A}

Force = P * A

Pressure is the product of density, gravitational constant and height

P = 780 * 10 * 6

Force

= P * A\\= 780 * 10*6*8*10^4\\= 37.44 * 10^{8}Kgm/s^2

5 0
3 years ago
What is the length of the blues progression in this excerpt?
Gre4nikov [31]
<span>In blues musicians also often refer to chord progressions using Roman numerals, as this facilitates transposing a song to a new key. For example, rock and blues musicians often think of the 12 bar blues as consisting of I, IV and V chords. Thus a simple version of the 12 bar blues might be expressed as I/I/I/I IV/IV/I/I V/IV/I/I. By thinking of this blues progression in Roman numerals, a backup band or rhythm section could be instructed by a band leader to do the chord progression in any key. For example if the band leader asked the band to play this chord progression in the key of C Major, the chords would be C/C/C/C F/F/C/C G/F/C/C.</span>
5 0
3 years ago
What determines all the star's properties such as its temperature, size, brightness and life span?
algol13
<span>The correct answer to the question that is stated above is letter d. Luminosity.
</span><span>Luminosity is the total energy that star produce in one second, depending on both the radius of the star and on its surface temperature. Thus, </span><span>all the star's properties such as its temperature, size, brightness and life span is determined by its luminosity.</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle
    13·1 answer
  • An elevator (mass 4850 kg) is to be designed so that the maximum acceleration is 0.0680g. What are the maximum and minimum force
    9·1 answer
  • HELP DUE TONIGHT<br><br> What is friction? How does friction affect the motion of an object?
    7·1 answer
  • Read this passage from Beowulf, in which Wiglaf, one of Beowulf's men, speaks to his companions as Beowulf battles the dragon. W
    14·2 answers
  • Two identical conducting spheres are placed 80.0 cm apart. One is given a charge of 5.8 C and the other is given a charge of 6.4
    14·1 answer
  • When slamming on your brakes in a car your acceleration is what?
    6·1 answer
  • How much is done when moving a box 25 m with a net force of 30 N?
    15·1 answer
  • The sugars produced by photosynthesis are stored and later may be consumed by an organism such as a deer, mouse, or human. The c
    9·1 answer
  • 7) The Curiosity rover was able to trace substances concluding that the planet consists mostly of materials having melting point
    13·2 answers
  • The line drawn connecting the crests of several waves and perpendicular to the direction of wave motion is the _____.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!