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
kari74 [83]
3 years ago
5

A 1280 kg car is moving 4.92 m/s. a 509 N force then pushes it forward for 28.7 m. what is its final KE?(unit=J)PLEASE HELP

Physics
2 answers:
laila [671]3 years ago
8 0

Answer:

The answer to your question is: total energy = 30100.4 J

Explanation:

Kinetic energy (KE) is the energy due to the movement of and object, its units are joules (J)

Data

mass = 1280 kg

speed = 4.92 m/s

Force = 509 N

distance = 28.7 m

Formula

KE = \frac{1}{2} mv^{2}

Work = Fd

Process

- Calculate Kinetic energy

- Calculate work

- Add both results

KE = \frac{1}{2} (1280)(4.92)^{2}

KE = 15492.1 J

Work = (509)(28.7)

Work = 14608.3 J

Total = 15492.1 + 14608.3

Total energy = 30100.4 J        

Elden [556K]3 years ago
3 0

Answer:

30,100 J

Explanation:

Work = change in energy

W = KE₂ − KE₁

Fd = KE − ½ mv²

(509 N) (28.7 m) = KE − ½ (1280 kg) (4.92 m/s)²

KE = 30,100 J

You might be interested in
Explain the different types of energy in a working wind turbine
tatiyna

Answer:

A wind turbine converts the kinetic energy of the wind into mechanical power.  

The wind moves the turbine and the turbine produce energy.

8 0
3 years ago
A dust particle floats in front of a silent loudspeaker as shown in the figure. The loudspeaker is turned on and plays a constan
dybincka [34]

Answer:tbh idk

Explanation:

tbh idk

8 0
3 years ago
Read 2 more answers
Newton’s second law states that the acceleration a of an object is proportional to the force F acting on it is inversely proport
netineya [11]

Answer:

[F]=[MLT^{-2}]

Explanation:

Newton’s second law states that the acceleration a of an object is proportional to the force F acting on it is inversely proportional to its mass m. The mathematical expression for the second law of motion is given by :

F = m × a

F is the applied force

m is the mass of the object

a is the acceleration due to gravity

We need to find the dimensions of force. The dimension of force m and a are as follows :

[m]=[M]

[a]=[LT^{-2}]

So, the dimension of force F is, [F]=[MLT^{-2}]. Hence, this is the required solution.

5 0
3 years ago
You throw a 50.0g blob of clay directly at the wall with an initial velocity of -5.00 m/s i. The clay sticks to the wall, and th
Whitepunk [10]

Answer:0.25 kg-m/s

Explanation:

Given

mass of blob m=50 gm

initial velocity u=-5 m/s\ \hat{i}

time of collision t=20 ms

we know Impulse is equal to change in momentum

initial momentum P_i=mu

P_i=50\times 10^{-3}\times (-5)=-0.25 kg-m/s

Final momentum P_f=50\times 10^{-3}v

P_f=0 as final velocity is zero

Impulse J=P_f-P_i

J=0-(-0.25)

J=0.25 kg-m/s

5 0
3 years ago
Explain how smoking damages the respiratory system and name two conditions that can develop when a person smokes. ribe the locat
kipiarov [429]

Answer

Explanation:

Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs. Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis. Cigarette smoking causes most cases of lung cancer.

6 0
3 years ago
Read 2 more answers
Other questions:
  • If the number of homes with a pet dog is equal to 250, how many total homes are repersented by the chart?
    11·1 answer
  • Friction is always undesirable. True False
    5·2 answers
  • a custodian pulls a vacuum 13.5 m with a 33.9 N force at a 55.0 degree angle , against a 14.2 N friction force . find the work d
    9·1 answer
  • According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unl
    8·1 answer
  • A temperature of 20°C is equivalent to approximately
    9·2 answers
  • The unit of potential is the?
    14·1 answer
  • In a chemical reaction, substances react in a specific ratio. Chemical reactions are used to make many products, including food.
    10·1 answer
  • You perform a double‑slit experiment in order to measure the wavelength of the new laser that you received for your birthday. Yo
    8·1 answer
  • whirl a rock at the end of a string and it follows a circular path. if the string breaks, the tendency of the rock is to
    13·1 answer
  • Tell your best joke or get L bozo​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!