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1) Compared to a ball thrown at 10 meters per second, which statement describes the change in kinetic energy of a ball of the same mass thrown at 20 meters per second?
2) The kinetic energy of the ball thrown at 20 meters per second is half (½×) the kinetic energy of the ball thrown at 10 meters per second.
3) The kinetic energy of the ball thrown at 20 meters per second is two times (2×) the kinetic energy of the ball thrown at 10 meters per second.
4) The kinetic energy of the ball thrown at 20 meters per second is the same as (=) the kinetic energy of the ball thrown at 10 meters per second.
Answer:
D. 4x as much
Explanation:
The answer is pretty simple. The question is asking about 10m/s and 20m/s right? Take a look at the energy at each point on the graph. At 10m/s the kinetic energy is 100 on the graph. At 20m/s the kinetic energy is 400. You'll notice that 100 x 4 is 400 - That's the answer.
You can also prove this mathematically. The formula for kinetic energy is
[tex]\frac{1}{2}mv^2[/tex]
The question says: constant mass so we can ignore that for now.
(1/2) * 10^2 is (1/2) * 100 = 50
for the 20m/s ball it would be
(1/2) * 20^2 = 400 * 1/2 = 200
Once again, you see that it is 4x
Answer:
It is weird that you put this the computer and tech. But it's (D. The kinetic energy of the ball thrown at 20 meters per second is the same as (=) the kinetic energy of the ball thrown at 10 meters per second. !!
Explanation:
Vocabulary and Bridge Information
Directions: Do NOT use bullet points or copy and paste definitions. Put them in YOUR words.
Once you have completed the vocabulary, answer the following discussion questions. In complete sentences.
VOCABULARY
Bridge 16. Beam
Ingenuity 17. Girder
Architecture 18. Abutment
Engineer 19. Truss
Level 20. Anchorage
Protractor 21. Deck
Arch 22. Mortar
Structure 23. Pile Driver
Engineering 24. Suspension Cable
Innovation 25. Rivet
Force
Physics
Prototype
Tension
Compression
DISCUSSION: Research the following bridge disasters and tell me the following: Who built/designed the bridge, what happened and when it happened. Answer in complete sentences.
Iron Bridge
London Bridge
Dee Bridge
Tacoma Narrows Bridge
Point Pleasant Bridge
please help me with this question if you answer it right ill make your answer brainliest <3
1. Molecular
2. Macroscopic
Please help!! I need this asap! thank you so much!! <3
Compared to a ball thrown at 10 meters per second, which statement describes the change in kinetic energy of a ball of the same mass thrown at 20 meters per second?
1) The kinetic energy of the ball thrown at 20 meters per second is half (½×) the kinetic energy of the ball thrown at 10 meters per second.
2) The kinetic energy of the ball thrown at 20 meters per second is two times (2×) the kinetic energy of the ball thrown at 10 meters per second.
3) The kinetic energy of the ball thrown at 20 meters per second is the same as (=) the kinetic energy of the ball thrown at 10 meters per second.
4) The kinetic energy of the ball thrown at 20 meters per second is four times (4×) the kinetic energy of the ball thrown at 10 meters per second.
Answer:
Does a car's kinetic energy change more when the car speeds up from 10 to 15 m/s or from 15 to 20 m/s explain?
Answer and Explanation: The kinetic energy changes more if the car goes from 15 m/s to 20 m/s.
Explanation:Does a car's kinetic energy change more when the car speeds up from 10 to 15 m/s or from 15 to 20 m/s explain?
Answer and Explanation: The kinetic energy changes more if the car goes from 15 m/s to 20 m/s.
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(the boxes have the same answer choices in both)
Answer:
going based off the graph, it looks like for the first one it's 50 and the second is 200.
Explanation:
lmk if it's right or wrong </3
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The data from the electromagnet experiment suggest some relationships between a cause (the construction of the electromagnet) and an effect (the number of paperclips lifted).
Think about the differences between Magnets A, B, and C. Now, select a question that you could ask to help you understand how the construction of an electromagnet affects its strength.
1) What effect does increasing the number of wraps of wire have on the strength of the electromagnet?
2) Will the magnet pick up other objects?
3) Does the battery need to have energy left in it?
4) Why does the nail pick up paper clips?