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
guajiro [1.7K]
2 years ago
11

Problem 6: A rocket accelerates upward from rest, due to the first stage, with a constant acceleration of a1 = 94 m/s2 for t1 =

23 s. The first stage then detaches and the second stage fires, providing a constant acceleration of a2 = 39 m/s2 for the time interval t2 = 34 s. Part (a) Enter an expression for the rocket's speed v1 at time t1 in terms of the variables provided. Part (b) Enter an expression for the rocket s speed v2 at the end of the second period of acceleration in terms of the variables provided in the problem statement Part (c) Using vow expressions for speeds v1 and v2 calculate the total distance trailed in meters, by the rocket from launch until the end of the second period of acceleration.
Physics
1 answer:
podryga [215]2 years ago
7 0

Answer:

a) v1 = a1*t1 = 2162 m/s

b) v2 = v1 + a2*(t2-t1) = 2591 m/s

c) Dt = D1 + D2 = \frac{v1^{2}}{2*a1} + \frac{v2^{2}-v1^{2}}{2*a2}=51004.5m

Explanation:

For any movement with constant acceleration:

Vf = vo + a*Δt.  Replacing the propper values, with get the answers for parts a) and b):

v1 = a1*t1 = 2162 m/s

v2 = v1 + a2*(t2-t1) = 2591 m/s

Using the formula for displacement we can calculate the total distance asked on part c):

V_{f}^{2}=V_{o}^2+2*a*D  Solving for D and replacing the values for each part of the launch:

D=\frac{V_{f}^{2}-V_{o}^{2}}{2*a}

D1 = 24863m

D2 = 26141.5m

Finally we add D1 + D2 for the total distance:

D = 51004.5m

You might be interested in
Imagine that Kevin can instantly transport himself between Planet X and Planet Y. Which statement could be said about Kevin in t
Over [174]
What are the choices ? 

Without some directed choices, I'm, free to make up any
reasonable statement that could be said about Kevin in this
situation.  A few of them might be . . .

-- Kevin will have no trouble getting back in time for dinner.

-- Kevin will have no time to enjoy the scenery along the way.

-- Some simple Physics shows us that Kevin is out of his mind.
He can't really do that.

           -- Speed = (distance covered) / (time to cover the distance) .

If time to cover the distance is zero, then speed is huge (infinite).

           -- Kinetic energy = (1/2) (mass) (speed)² .

If speed is huge (infinite), then kinetic energy is huge squared (even more).
There is not enough energy in the galaxy to push Kevin to that kind of speed.

         -- Mass = (Kevin's rest-mass) / √(1 - v²/c²)

-- As soon as Kevin reaches light-speed, his mass becomes infinite.
-- It takes an infinite amount of energy to push him any faster.
-- If he succeeds somehow, his mass becomes imaginary.
-- At that point, he might as well turn around and go home ...
     if he ever reached Planet-Y, nobody could see him anyway.
8 0
2 years ago
Read 2 more answers
Identify the wavelength of this wave.
Zolol [24]

Answer:

A

Explanation:

The line(A) goes throughout the entire picture. So therefore choice A would be it's length.

3 0
2 years ago
What is the potential energy of a 5kg rock that is 7m high on a hill
Goryan [66]

Explanation:

Gravitational potential energy = mgh = (5)(9.81)(7) = 343.35J.

4 0
2 years ago
Please help in this question!! I will mark brainlest​
LUCKY_DIMON [66]

Answer:

im not too sure about that all i know is history

4 0
3 years ago
A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound
Yakvenalex [24]
Speed = distance/time
= 16.5/2.5 = 6.6 ms^-1
3 0
2 years ago
Other questions:
  • What 3 simple machines are in scissors
    6·1 answer
  • What is the length of a pendulum that has a period of 0.500s?
    9·1 answer
  • A 55.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300. What h
    6·1 answer
  • A 70 kilogram mountaineer is standing on the summit of Mt. Everest. The distance between the mountaineer and the center of Earth
    9·2 answers
  • A heavy boy and a lightweight girl are balanced on a massless seesaw. The boy moves backward, increasing his distance from the p
    6·1 answer
  • Can someone please help me? If somebody pushes a cart with 4N of force and the cart moves a distance of 2 meters, how much work
    11·1 answer
  • two womans are of the same weight. one wears sandals with pointed heels while the other wears sandals with flat sole s. which on
    9·1 answer
  • Several wires of varying thickness are all made of the same material and all have the same length. If the wires are arranged in
    14·1 answer
  • The space around a charge or a pole in which a force is experienced is called a:
    8·1 answer
  • What conclusion can be made about the relationship between the wavelength of light and the angle of refraction?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!