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
aksik [14]
3 years ago
14

A 1400 kg aircraft going 40 m/s collides with a 1500 kg aircraft that is parked and they stick together after the collision and

are going 19.3 m/s after the collision. If they skid for 7 seconds before stopping, how far did they skid? Hint: Are the aircraft moving at a constant velocity after the collision or do they experience an acceleration?
Physics
1 answer:
Leni [432]3 years ago
6 0

Answer:

67.6 m

Explanation:

For this problem, we just need to analyze the motion of the two planes after the collision.

The two planes stick together and move with a velocity of

u = 19.3 m/s

The problem tells us that they skid until they stop: so, their final velocity is

v = 0

Since the velocity is not constant, this means that they are accelerating.

We also know that they skid for a time of

t = 7 s

Therefore, we can find their stopping distance using the following suvat equation

s=(\frac{u+v}{2})t

And substituting, we find

s=(\frac{0+19.3}{2})(7)=67.6 m

You might be interested in
A piston of volume 0.1 m3 contains two moles of a monatomic ideal gas at 300K. If it undergoes an isothermal process and expands
seropon [69]

Answer:

the work is done by the gas on the environment -is W= - 3534.94 J (since the initial pressure is lower than the atmospheric pressure , it needs external work to expand)

Explanation:

assuming ideal gas behaviour of the gas , the equation for ideal gas is

P*V=n*R*T

where

P = absolute pressure

V= volume

T= absolute temperature

n= number of moles of gas

R= ideal gas constant = 8.314 J/mol K

P=n*R*T/V

the work that is done by the gas is calculated through

W=∫pdV=  ∫ (n*R*T/V) dV

for an isothermal process T=constant and since the piston is closed vessel also n=constant during the process then denoting 1 and 2 for initial and final state respectively:

W=∫pdV=  ∫ (n*R*T/V) dV =  n*R*T  ∫(1/V) dV = n*R*T * ln (V₂/V₁)

since

P₁=n*R*T/V₁

P₂=n*R*T/V₂

dividing both equations

V₂/V₁ = P₁/P₂

W= n*R*T * ln (V₂/V₁)  = n*R*T * ln (P₁/P₂ )

replacing values

P₁=n*R*T/V₁ = 2 moles* 8.314 J/mol K* 300K / 0.1 m3= 49884 Pa

since P₂ = 1 atm = 101325 Pa

W= n*R*T * ln (P₁/P₂ ) = 2 mol * 8.314 J/mol K * 300K * (49884 Pa/101325 Pa) = -3534.94 J

5 0
3 years ago
Which organism is an example of a producer?<br> moth<br> mushroom<br> rose bush<br> cheetah
Anni [7]
A rose bush is a producer. Producing Carbohydrates from water, CO2 and sunlight.
7 0
3 years ago
Read 2 more answers
Give three practical uses of electromagnets
PtichkaEL [24]
Three practical uses of electromagnets would be
Light. The waves
Electric locks. The bolts that are used by the
coils
Cranes. The electric ones that are found in
scraps
Cars computers washing machines all use
Electromagnets . Even CD players DVDs
Players
7 0
4 years ago
Explain what is meant by the term "electrical resistance"
Dominik [7]

Electrical resistance is the opposition to current within a current .electrical resistance also explain the relationship between voltage and current.

3 0
3 years ago
Please help :D
r-ruslan [8.4K]

Answer:

C. A tennis player serves into the net.

Explanation:

All the other answer choices say something is being held so my guess is C

8 0
4 years ago
Other questions:
  • MARKING BRAINLIEST AND I NEED WORK SHOWN ! i’m a junior in high school
    7·1 answer
  • Choose the false statement concerning parallel circuits.
    9·1 answer
  • A ring and a disc, both with radius r and mass M, roll down an incline. Find their angular and linear accelerations.
    10·1 answer
  • Tidal friction is slowing the rotation of the Earth. As a result, the orbit of the Moon is increasing in radius at a rate of app
    15·1 answer
  • how do i describe, how the potential energy of water molecules changes from a solid to a liquid and then from a liquid to a gas?
    5·1 answer
  • The rating of a light bulb at 100 watts indicates
    12·1 answer
  • A 100 kg mass is pulled along a frictionless surface by a horizontal force F such that its acceleration is 8.0 m/s2. A 20 kg mas
    12·1 answer
  • If you apply 3 times the force for 4 times the distance, how much does your work increase?
    15·1 answer
  • A more powerful engine means a plane will have a
    13·1 answer
  • Why is it important to know the location of active and inactive faults in our country?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!