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
creativ13 [48]
3 years ago
11

1. A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed?

Physics
2 answers:
bulgar [2K]3 years ago
4 0
Use KE= 1/2mv^2
So... 
50,000=(.5)(1,000)v^2
50,000=500 x v^2
Divide 500 on both sides 
100 = v^2 
Square root both sides to get rid of v^2 
Therefore v = 10 m/s
Crank3 years ago
3 0

½mv²= KE  

½(1000)?²= 50000

500*?²= 50000

/500            /500

? ²=100

Square root  

?= 10

10 m/s is you answer

You might be interested in
An airliner must reach a speed of 110 m/s to take off. If the length of the runway is 2.4 km and the aircraft accelerates from r
Gnoma [55]

Answer:

Knowing others is intelligence; knowing yourself is true wisdom. mastering others is strength; mastering yourself is true power. if you realize that you have enough, you are truly rich, "And the cause of not following your heart, is in spending the rest of your life wishing you had."

Explanation:

Discuss what you understand about the quote.

3 0
3 years ago
What is the constraint forces
neonofarm [45]

Answer:

(1) Support

(2) Tension

(3) Reaction

The constraint forces are forces that occur in pairs such that the net force (effect) is zero

The details of the constraint forces are;

(1) The support force at the top of the swing acting upwards

(2) The tension in the swing rope acting upwards

(3) The (normal) reaction between the legs of the swing frame and the ground

Explanation:

The normal reaction is the force equal in magnitude and opposite in direction to the total weight force the swing and the person on the swing posses due to gravitational attraction which prevents the downward or sideways motion of the entire swing

6 0
2 years ago
What components of a gas powered car are present in a hybrid? What components of an electric car or present in a hybrid? Interio
rosijanka [135]
I don't know how to anwser this but and gas hybrid uses and gas powered motor so tiny explosions inside of the cyiliders but the electric car uses and electric motor powered by a simple battery...I still don't know if this is correct....
4 0
3 years ago
Ariel's puppy weighs 15 lb. Heather's puppy weighs 50 N. Whose puppy weighs more?
yarga [219]
15 lb is nearly 6 kg amd 50 n is nearly 5 kg,so first puppy weighs more
5 0
3 years ago
suppose an electrically charged ruler transfers some of its charge by contact to a tiny plastic sphere. will the ruler and the s
poizon [28]

Answer:

Here ball and rod will repel each other as they are of similar charges

Explanation:

As we know that the two charges attract or repel each other by electrostatic force

This force is given as

F = \frac{kq_1q_2}{r^2}

so we know if two charges are similar in nature then they will repel each other and if the two charges are opposite in nature then they will attract each other

So here when rod touch the ball then it transfer its charge to the ball and due to similar charges in ball and rod they both repel each other

5 0
3 years ago
Other questions:
  • A dog sees a cat and runs for 10 s at 4.8 m/s before the cat runs up a tree
    9·1 answer
  • A person whose mass is m = 70.0 kg m=70.0 kg steps on a mechanical bathroom scale placed on an inclined plane that makes the ang
    8·1 answer
  • Give an example of a fad diet that is not healthy and one that is healthy. Explain how you know the difference.
    7·1 answer
  • 1)what's the recommend amount of uv protection that sunglasses should provide?
    8·2 answers
  • You do 1200J of work with gears.If the gears do 1000J of work, what is the efficiency of the gears?
    14·1 answer
  • Do earthquakes and volcanoes occur anywhere away from plate boundaries
    14·1 answer
  • True or False:
    8·2 answers
  • A 10 kg weight is suspended in the air by a strong cable. How much work is done, per unit time, in suspending the weight
    14·1 answer
  • A student shines a mixture of red and blue light onto a blue toy car. What colour will the car appear?
    14·1 answer
  • Can any one give me a good egg drop design that is over 500 grams?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!