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
scZoUnD [109]
3 years ago
6

A rocket achieves a lift-off velocity of 500.0 m/s from rest in 30.0 seconds. Calculate the average acceleration of the rocket.

Physics
1 answer:
Anettt [7]3 years ago
6 0

Answer:

The average acceleration is 16.6 m/s² ⇒ 1st answer

Explanation:

A rocket achieves a lift-off velocity of 500.0 m/s from rest in

30.0 seconds

The given is:

→ The initial velocity = 0

→ The final velocity = 500 meters per seconds

→ The time is 30 seconds

Acceleration is the rate of change of velocity of the rocket

→ a=\frac{v-u}{t}

where a is the acceleration, v is the final velocity, u is the initial velocity

and t is the time

→ u = 0 , v = 500 m/s , t = 30 s

Substitute these values in the rule

→ a=\frac{500-0}{30}=\frac{500}{30}=16.6 m/s²

<em>The average acceleration is 16.6 m/s²</em>

You might be interested in
How many valence electrons do most stable atoms have?
IceJOKER [234]

Answer:

D) 8

Explanation:

Due to the octet rule the most stable atoms will have 8 valence electrons.

8 0
3 years ago
50 points for this please help
Softa [21]

but the points are only 25

7 0
3 years ago
Read 2 more answers
Describe how radio telescopes function.
FrozenT [24]

A radio telescope is simply a telescope that is designed to receive radio waves from space. In its simplest form it has three components:

1. One or more antennas to collect the incoming radio waves. Most antennas are parabolic dishes that reflect the radio waves to a receiver, in the same way as a curved mirror can focus visible light to a point.

2. A receiver and amplifier to boost the very weak radio signal to a measurable level. These days the amplifiers are extremely sensitive and are normally cooled to very low temperatures to minimise interference due to the noise generated by the movement of the atoms in the metal (called thermal noise).

3. A recorder to keep a record of the signal. Most radio telescopes nowadays record directly to some form of computer memory disk as astronomers use sophisticated software to process and analyse the data.

7 0
3 years ago
What is the relationship between the frequency and the wavelength of a wave?
Marina CMI [18]

Answer: The wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength.

Explanation:

7 0
2 years ago
The acceleration of a particle is constant. At t = 0, the particle is at the origin and the velocity of the particle is vo = vji
BartSMP [9]

Answer:

a) a = - \frac{v_1}{T} i ^ +\frac{v_3 - v_2}{T} j^, b) r = 2 v₃ T j ^, c)    v = -v₁ i ^ + (2 v₃ - v₂) j ^

Explanation:

This is a two-dimensional kinematics problem

a) Let's find the acceleration of the body, for this let's use a Cartesian coordinate system

X axis

     

initial velocity v₀ₓ = v₁ for t = 0, velocity reaches vₓ = 0 for t = T, let's use

          vₓ = v₀ₓ + aₓ t

we substitute

          for t = T

           0 = v₁ + aₓ T

           aₓ = - v₁ / T

y axis  

       

the initial velocity is v_{oy} = v₂ at t = 0 s, for time t = T s the velocity is v_{y} = v₃

             v₃ = v₂ + a_{y} T

              a_{y} = \frac{v_3 - v_2}{T}

therefore the acceleration vector is

             a = - \frac{v_1}{T} i ^ +\frac{v_3 - v_2}{T} j^

b) the position vector at t = 2T, we work on each axis

X axis

             x = v₀ₓ t + ½ aₓ t²

we substitute

             x = v₁ 2T + ½ (-v₁ / T) (2T)²

              x = 2v₁ T - 2 v₁ T

              x = 0

Y axis  

             y = v_{oy} t + ½ a_{y} t²

             y = v₂ 2T + ½ \frac{v_3 - v_2}{T} 4T²

             y = 2 v₂ T + 2 (v₃ -v₂) T

            y = 2 v₃ T

the position vector is

            r = 2 v₃ T j ^

c) the velocity vector for t = 2T

X axis

            vₓ = v₀ₓ + aₓ t

we substitute

           vₓ = v₁ - \frac{v_1}{T} 2T = v₁ - 2 v₁

           vₓ = -v₁

Y axis  

           v_{y} = v_{oy} + a_{y} t

           v_{y} = v₂ + \frac{ v_3 - v_2}{T} 2T

           v_{y} = v₂ + 2 v₃ - 2v₂

           v_{y} = 2 v₃ - v₂

the velocity vector is

           v = -v₁ i ^ + (2 v₃ - v₂) j ^

5 0
3 years ago
Other questions:
  • If your speech changes from 10 km/h to 6 km, you have a(n) ___ acceleration. A. negative B. Positive C. Neutral D. Oscillating
    11·1 answer
  • What do all heterotrophs have in common?
    13·1 answer
  • For every O ion, two Na ions are needed to balance charges. Which ratio represents the relationship between Na and O? 1 Na:1 O 1
    12·2 answers
  • In a pendulum system, does the kinetic exceed the potenial energy? Explain.
    11·1 answer
  • A train travelling at 20m/s undergoes a uniform deceleration of 2m/s2 when brakes are applied.. calculate the time taken to come
    5·1 answer
  • The flow of electrons from one atom to another is called
    12·1 answer
  • What is air pressure?
    12·1 answer
  • Just as optical astronomers observe the visible light emitted by objects such as stars and galaxies, radio astronomers can also
    12·1 answer
  • 5. __________ is the idea that all people must follow the law and that the law is applied to all equally even people in the gove
    5·1 answer
  • URGENT PLEASE ANSWER
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!