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
lora16 [44]
3 years ago
11

Two planes approach each other head on. Each has a speed of 721km/h and they spot each other when they are initially 14.7km apar

t. How many seconds (s) do the pilots have to take evasive action?
Physics
1 answer:
Naya [18.7K]3 years ago
5 0

Answer:

The time the pilots have to take evasive action is approximately 36.699 seconds

Explanation:

The direction of the planes = Towards each other

The speed of each plane, v₁, v₂ = 721 km/h

The initial distance between the two planes, d = 14.7 km

The relative velocity of the two planes, v = v₁ + v₂

v = 721 km/h + 721 km/h = 1,442 km/h

The time it will take the planes to meet, t = d/v

∴ t = 14.7 km/(1,442 km/h) = (21/2,060) h × 60 min/hr × 60 s/min ≈ 36.699 s

The time it will take the planes to meet = The time the pilots have to take evasive action, t ≈ 36.699 seconds.

You might be interested in
Science not has only achievements but also challenges justify with an example
statuscvo [17]
For example science has discovered many amazing things like atoms,molecules which led to the development of nuclear reactors etc. Challenges would be like trying to prove theories like evolution for 100 of years trying to discover all the stuff we still don’t know exists all the mysteries of life. A lot of science is still theory we can’t prove some things until we have more advanced technology etc.
3 0
2 years ago
2. In the pendulum lab, the period (swing time) was O a. the independent variable O b.graphed on the vertical-axis O c.graphed o
Nadya [2.5K]
B is appropriate answer
7 0
3 years ago
Describe the motion of the moon in space to produce the different phases of the moon.
ss7ja [257]

Answer:

Moon slowly moves eastward, rising later each day and passing through its phases:

Explanation:

4 0
2 years ago
A scientist records the motion of an object. She writes down that the
Phantasy [73]
The answer is Velocity
3 0
3 years ago
You shine a LASER from the air into water. What happens to light?
GarryVolchara [31]
The answer is B! Hope this helps
5 0
2 years ago
Other questions:
  • How large an expansion gap should be left between steel railroad rails if they may reach a maximum temperature 36.0°C greater th
    15·1 answer
  • g A rod is 2.0 m long and lies along the x-axis, with one end at the origin. A force of 25 N is applied at the point x = 1.2 m,
    14·1 answer
  • How does air resistance affect the acceleration of falling objects?
    10·1 answer
  • Ok i bet none of you guys/girls can get this right there's three states of matter solid
    6·1 answer
  • Consider a uniformly charged sphere of radius Rand total charge Q. The electric field Eout outsidethe sphere (r≥R) is simply tha
    15·1 answer
  • The hottest climates on Earth are located near the Equator because this region
    11·1 answer
  • Besides the force due to gravity or g, what else determines the period of a pendulum?
    11·2 answers
  • How much time does it take for a runner moving at a speed of 8.0 meters per second to come to a stop if her
    15·1 answer
  • Does the length of a persons hair affect the power of static electricity
    15·2 answers
  • I have no clue how to do this at all
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!