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
GrogVix [38]
3 years ago
6

A pilot increases the take off speed of a jet uniformly from 10 km/hr to 140km/hr in 50 seconds. What is the rate of acceleratio

n?
Physics
1 answer:
lesya [120]3 years ago
8 0
Acceleration  =  (change in speed) / (time for the change)

Change in speed = (speed at the end) - (speed at the beginning)

                            =  (140 km/hr)  -  (10 km/hr)   =   130 km/hr

Time for the change  =  50 sec

Acceleration  =  (130 km/hr) / (50 sec)   =   2.6 km/hr per second.


To convert to more familiar units:

             (2.6 km/hr-sec) x (1000 m/km) x (1 hr/3600 sec)

         =  (2.6 x 1000 x 1) / (3600)         km-m-hr / hr-sec-km-sec        

         =     0.722  m/s²   (about 0.074 of a G)        
You might be interested in
What does it take to change the direction or speed of an object
Marina86 [1]

Answer:

An object's speed or direction can be changed by a force. This means a greater force against a lesser force, and it results in acceleration. This means any push or pull against another equal push or pull. It results in no change of acceleration

Explanation:

8 0
3 years ago
If the potential across two parallel plates, separated by 3 cm, is 12 volts, what is the electric field strength in volts per me
Mrrafil [7]
There are 100cm in 1m, divide 100 by 3 and you get 33, multiply that by 12 and you get  396 volts/m.

Hope this is correct and helps.
6 0
4 years ago
Read 2 more answers
A person running down the hallway at a velocity of 4.2 m/s comes to a stop in a time of 1.8 seconds to avoid hitting the wall. W
kumpel [21]
Hshshshhshdhdhdhdhddhdhdhdhdhdh
6 0
3 years ago
Read 2 more answers
One way to decrease the inertia of an object is to
ANTONII [103]

The only way to decrease the inertia of an object is to remove some of its mass.  (B)

8 0
4 years ago
Read 2 more answers
Every substance has a specific value of heat required to change the temperature of 1 gram of the substance by 1 degree Celsius.
zimovet [89]
I believe the correct answer from the choices listed above is option C. The units for the specific heat capacity or C would be J/g °C. It is <span>the heat required to raise the temperature of the unit mass of a given substance by a given amount .</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Sir wants to see if a new shower cleaner works better in removing soap dirt than his old cleaner.  He uses the new cleaner on on
    15·1 answer
  • A security guard walks at a steady pace traveling 170 m in one trip around the perimeter of a building.
    11·1 answer
  • Function of alcohol in alcohol thermometer​
    10·2 answers
  • Sarah wanted to find out if temperature has an effect on the growth of bread mold. She grew the mold in nine Petri dishes contai
    15·1 answer
  • Air exits a turbine at 200 kPa and 1508C with a volumetric flow rate of 7000 liters/s. Modeling air as an ideal gas, determine t
    6·1 answer
  • What is the total resistance of the circuit shown below?
    10·1 answer
  • How long would it take Jesse with the acceleration of -2.50 m/s to bring his bicycle with an initial velocity of 13.5 m/s to a c
    7·1 answer
  • An incident ray of light strikes a diamond at an angle of
    7·2 answers
  • Everyone open this please!
    13·2 answers
  • A rolling ball has 18 joules of kinetic energy and is rolling 3 m/s. Find its <br> mass
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!