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
Arisa [49]
3 years ago
9

An Airbus A380 airliner can takeoff when its speed reaches 80 m/s. Suppose its engines together can produce an acceleration of 3

m/s. (a) How long does it take the plane to accelerate from 0 m/s to 80 m/s? (b) What is the distance traveled during this period?
Physics
1 answer:
Tomtit [17]3 years ago
7 0

Answer:

(a). The time is 26.67 sec.

(b). The distance traveled during this period is 1066.9 m.

Explanation:

Given that,

Speed = 80 m/s

Acceleration = 3 m/s

Initial velocity = 0

(a). We need to calculate the time

Using equation of motion

v = u+at

t = \dfrac{v-u}{a}

Put the value into the formula

t = \dfrac{80-0}{3}

t =26.67\ sec

The time is 26.67 sec.

(b). We need to calculate the distance traveled during this period

Using equation of motion

s = ut+\dfrac{1}{2}at^2

s = 0+\dfrac{1}{2}\times3\times(26.67)^2

s =1066.9\ m

The distance traveled during this period is 1066.9 m.

Hence, This is the required solution.

You might be interested in
There are competitions in which pilots fly small planes low over the ground and drop weights, trying to hit a target. Part A A p
tamaranim1 [39]

Explanation:

A pilot flying a weight; it takes t = 3.4 s to hit the ground, during which it travels a horizontal distance d = 120 m  

h = g/2*t^2

h= 4.903*3.4^2

h=56.701 m

V = d/t

V= 120/3.4

V=35.3 m/sec  

Now the pilot does a run at the same height but twice the speed.  

How much time (t1) does it take the weight to hit the ground?

t1 = t = 3.4 sec (depending just upon height)

5 0
3 years ago
A small mailbag is released from a helicopter that is descending steadily at 2.00 m/s. After 3.00 s.
Misha Larkins [42]

Answer:

Explanation:

Initial velocity of mailbag u = 2 m/s

acceleration downwards a = g = 9.8 m/s²

time t = 3 s

a ) final velocity v = ?

v = u + at

= 2 + 9.8 x 3

= 31.4 m /s

b )

s = ut + 1/2 g t²

s is relative displacement of mailbag

u = relative initial velocity of mailbag = 0

relative acceleration = g = 9.8 m /s²

time t = 3 s

s = 0 + 1/2 x 9.8 x 3²

= 44.1 m

relative displacement of mailbag = 44.1 m .

4 0
2 years ago
What has to happen for a feather and ball to fall at the same time
Alex_Xolod [135]
This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height. ... When air resistance plays a role, the shape of the object becomes important. In air, a feather and a ball do not fall at the same rate.
4 0
3 years ago
You have learned of two fundamental units that are not vector quantities. Which are they?
Mila [183]

Answer:

Mass and time are not vector quantities .

Explanation:

All the physical quantities can be classified into two major categories that is :

  • Scalar
  • Vector

Scalar quantities

  • They are those that describes only  the magnitude and they are regarded as incomplete quantities as they don't provide complete information.

               For example :  Speed ,Mass, Time etc

Vector quantities

  • They are complete quantities that can be described in magnitude as well as direction .

         For example : Velocity ,gravity ,Acceleration etc

4 0
3 years ago
Once a hypothesis is tested and confirmed, and then tested again and confirmed again by many others, it may provide the basis fo
mr Goodwill [35]
Once a hypothesis is tested and confirmed, and then tested again and confirmed again many many others, it may provide the basis for or become a part of, a

Scientific theory.

I hope this helped you!

Brainliest answer is always appreciated!
7 0
3 years ago
Other questions:
  • Chemical properties of an acid include...
    6·2 answers
  • Standing at the same location, which organism would have the GREATEST gravitational attraction to the earth?
    13·2 answers
  • - The school zone in front of your school has a posted speed limit of 25 mi/h, which is about 11 m/s. Let's
    11·1 answer
  • IP The x and y components of a vector r⃗ are rx = 16 m and ry = -8.5 m , respectively
    5·1 answer
  • Compared to a virtual image, a real image
    7·1 answer
  • A completely inelastic collision occurs between two balls of wet putty that move directly toward each other along a vertical axi
    9·1 answer
  • If a 75 W lightbulb is 15% efficient, how many joules of light energy does the bulb produce every minute?
    9·1 answer
  • Which of these is NOT one of the 3 Bs of light you learned about in this lesson?
    13·1 answer
  • Which of the following is an example of Class 3 lever system
    7·2 answers
  • a car company wants to ensure its newest model can stop in 50 m when traveling at 30 m/s (which is about 108 km/h). if we assume
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!