Given :
Height from which ball is dropped , h = 40 m .
Acceleration due to gravity , g= 10 m/s² .
Initial velocity , u = 0 m/s .
To Find :
Velocity when ball covered 20 m and velocity when it hit the ground .
Solution :
Now , height when ball covered 20 m distance is , 40 - 20 = 20 m .
By equation of motion :
Now , distance covered when body reaches ground is , 40 m .
Putting value h = 40 m in above equation , we get :
Hence , this is the required solution .
Answer:
B. At stage B, because the elastic is completely strecthed.
Explanation:
Try pulling a rubber band or something stretchable and take a piece of small paper (just enough to fit in the rubber band). now try to pull the rubber band into 3 levels.
1st level - pull the rubber band with a short force and see if the paper will travel farther.
2nd level - now pull the rubber band with a medium force and see if the paper will be much farther compared to the (1st level)
3rd level - pull the rubber band with full force and see if the paper is much farther compared to the (2nd level).
Disclaimer:
Just in case I gave the wrong answer "Please don't hate me"
Thank you.
Answer:
Aquatic organisms and the physical and chemical components of their environment are inseparably inter-related and interact with other. Flow and water chemistry are the primary factors governing life in riverine habitats, and both are closely related to seasonal variations.
Explanation:
We wouldn’t really have a solid concept of time. We also wouldn’t be able to keep up with the tides
A rolling friction jdisns