An airplane needs to reach a velocity of 203.0 km/h to takeoff. On a 2000 m runway, what is the minimum accelerationnecessary for the plane to take flight? a) 0.79 m/s2 b) 1.0 m/s2 c) 0.95 m/s2 d) 0.87 m/s2

Wotzdorfg

Wotzdorfg

Answered question

2021-02-27

An airplane needs to reach a velocity of 203.0 km/h to takeoff. On a 2000 m runway, what is the minimum accelerationnecessary for the plane to take flight?
a) 0.79 m/s2
b) 1.0 m/s2
c) 0.95 m/s2
d) 0.87 m/s2

Answer & Explanation

Adnaan Franks

Adnaan Franks

Skilled2021-02-28Added 92 answers

We can solve using the equation
vf2=v02+2ax
where ?x is the distance over shich the accelerationoccurs. Solving this for a, we have a=v{f}2v{0}22x
We need to convert our velocity to units of m/s, so first wemultiply by 1000 m/km and divide by 3600 s/h which gives
vf= (203kmh)(1000mkm)(3600sh)=56.4ms
Now, we just insert vf=56.4 m/s, v0=0,and x=2000m into our equation, giving a=(56.4ms)22(2000m)=0.79ms2
so our answer is a) 0.79 m/s

Jeffrey Jordon

Jeffrey Jordon

Expert2021-10-08Added 2605 answers

Step-by-step explanation:

Acceleration = change in Velocity over time. Mathematically it is represented as vt

Given values in the question:

  • Final velocity 203.0 km/h which is equal to (203/3.6)m/s = 56.39 m/s
  • distance 2000 m
  • Initial velocity is 0 m/s

To use the equation for acceleration time is needed.

velocity= distance/time

(2033.6)=2000time  multiplying both sides by time

(2033.6)×time=2000 making time subject of the formula

time=2000(2033.6)

time = 35.47 seconds

Substituting into the acceleration equation

acceleration =vt

=(56.390)35.47

=56.3935.47

=1.59 m/s2

user_27qwe

user_27qwe

Skilled2023-06-12Added 375 answers

Step 1:
First, we need to convert the velocities from km/h to m/s:
v=203.0km/h=203.0×10003600m/s56.39m/s
u=0km/h=0m/s
Step 2:
Now, we can substitute these values into the equation:
(56.39)2=(0)2+2×a×2000
Simplifying the equation:
3180.1521=4000a
Step 3:
Finally, solve for a:
a=3180.152140000.795m/s2
Therefore, the minimum acceleration necessary for the plane to take flight is approximately 0.795m/s2.
karton

karton

Expert2023-06-12Added 613 answers

Answer:
a) 0.79m/s2.
Explanation:
v2=u2+2as
Here, v is the final velocity, u is the initial velocity, a is the acceleration, and s is the displacement.
Given that the airplane needs to reach a velocity of 203.0 km/h (which can be converted to m/s) and the runway length is 2000 m, we can substitute these values into the equation.
Let's calculate the minimum acceleration required for the plane to take flight.
First, let's convert the velocity from km/h to m/s:
203.0km/h=203.0×10003600m/s
v=56.4m/s
Next, we substitute the values into the equation:
56.42=02+2×a×2000
Simplifying the equation, we have:
a=56.422×2000
Calculating this value:
a=56.424000
a=0.7938m/s2
Now, let's compare the calculated acceleration with the given options and find the closest one.
a) 0.79m/s2
b) 1.0m/s2
c) 0.95m/s2
d) 0.87m/s2
The calculated minimum acceleration is approximately 0.7938m/s2, which is closest to option a) 0.79m/s2.
star233

star233

Skilled2023-06-12Added 403 answers

To solve the problem, we can use the following equation of motion:
v2=u2+2as
where:
v = final velocity (203.0 km/h)
u = initial velocity (0 km/h, as the plane starts from rest)
a = acceleration (unknown)
s = displacement (2000 m)
We need to rearrange the equation to solve for a:
a=v2u22s
Substituting the given values:
a=(203.0km/h)2(0km/h)22·2000m
a=(203.0km/h)24000m
a=203.024000m/s2
Calculating the value:
a1.039m/s2
Therefore, the minimum acceleration necessary for the plane to take flight is approximately 1.039m/s2.

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