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
Pavel [41]
3 years ago
15

A rocket ship starts from rest and turns on its forward booster rockets, causing it to have a constant acceleration of 4 \,\dfra

c{\text m}{{\text s}^2}4 s 2 m ? rightward. After 3\,\text s3s, what will be the velocity of the rocket ship? Answer using a coordinate system where rightward is positive.
Physics
1 answer:
Sergio039 [100]3 years ago
6 0

Answer:

+12 m/s

Explanation:

The velocity of an object moving of accelerated motion is given by:

v(t) = v_0 +at

where

v0 is the initial velocity of the object

a is the acceleration

t is the time

In this problem, the rocket starts from rest, so v_0 =0. The acceleration is a=4 m/s^2, so the velocity after t=3 s will be

v(3 s)=0 +(4 m/s^2)(3 s)=+12 m/s

You might be interested in
What is the wavelength of an AM radio wave in a vacuum if its frequency is 810 kHz?
dalvyx [7]
Answer- 370.114 meters
6 0
2 years ago
Multiple choice please help :)
oee [108]

Answer:

oh i would have to do alot to answer that

7 0
3 years ago
Which of the following properties of water help to explain why icebergs float in the ocean?
crimeas [40]
The reason why icebergs float in the ocean has to do with temperature. Icebergs are colder than the ocean water and therefore the cold water is less dense than the warm water and this causes the Iceberg to float.
7 0
3 years ago
Which of the following is the most important reason why simple harmonic motion will not continue forever in most real-world situ
d1i1m1o1n [39]
<span>A.frictional effects dissipate energy.</span>
4 0
3 years ago
Tina is driving her sports car down US1, traveling 27m/s. She sees her friend Rita up ahead, waiting to cross the street at the
mrs_skeptik [129]

Answer:

434 Hz

Explanation:

According to the Doppler effect, when a source of a wave is moving towards an observer at rest, then the observer will observe an apparent frequency which is higher than the original frequency of the source.

In this situation, Tina is driving towards Rita. Tina is the source of the sound wave (the horn), while RIta is the observer. Since the original frequency of the sound is 400 Hz, Rita will hear a sound with a frequency higher than this value.

The only choice which is higher than 400 Hz is 434 Hz, so this is the frequency that Rita will hear.

3 0
3 years ago
Other questions:
  • What are the four forms that water takes when it returns to earth from the clouds?
    6·1 answer
  • In which activity is no work done?
    15·2 answers
  • Use these images to identify each state of matter. O O CC 0 COM A B C​
    6·1 answer
  • 50 POINTS ANSWER CORRECTLY
    11·2 answers
  • Describe a solar eclipse. Be sure to include the positions of the sun, moon, and earth.
    8·1 answer
  • Two particles with oppositely signed charges are held a fixed distance apart. The charges are equal in magnitude and they exert
    12·1 answer
  • If an acid is combined with a base of equal strength, the result will most likely be
    9·1 answer
  • Which galaxy is the most stretched out?<br>​
    9·2 answers
  • Which of the following is true for the angular momentum of rotating bicycle wheel
    9·1 answer
  • Why do electrons flow around a circuit when the circuit is complete?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!