BrandonBBB
17.09.2021 •
Physics
Phương trình chuyển động của một chất điểm dọc theo trục Ox có dạng: x = 40 – 10t (m, s).
a. Xác định tọa độ ban đầu, vận tốc và hướng chuyển động. Sau bao lâu thì về tới gốc tọa độ?
b. tính quãng đường đi được sau 2h chuyển động?
Solved
Show answers
More tips
- S Sport How to Get Rid of Belly Fat: Easy Way to Achieve the Perfect Figure...
- F Family and Home When and how to start introducing solid foods to your baby?...
- B Business and Finance Moneybookers – What it is and How it Works...
- C Computers and Internet How to Format Your C Drive: Detailed Guide and Tips...
- F Food and Cooking What can and cannot be eaten during Lent?...
- H Health and Medicine What to Do When Your Jaw Locks Up?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- D Dating, Love, Relationships Is it a Compliment or Flattery: What s the Difference?...
- S Science and Technology The Metric System in Our Daily Life: Understanding Its Importance...
- C Computers and Internet What to Do If Your ICQ Gets Hacked?...
Answers on questions: Physics
- P Physics A stone is dropped from the top of a high building. After 1.80s, a second stone is dropped from the top of the building. How far apart are the stones when the second stone has...
- P Physics How many seconds are there in a calendar year,given that a calendar year has 365.24 days in it?...
- P Physics The image shows a facility that converts the energy of moving water into electrical energy. What is one advantage of using this technology in place of a coal-burning power plant?...
- P Physics As a skydiver accelerates downward, what force increases? A. Gravity B. Thrust C. Air resistance D. Centripetal...
- M Mathematics How do you find the area?...
- A Arts Answer the following question in 3-4 complete sentences. RINI CIBIO ERSONERHUUR GUERLUM ER APUDOM GON What is the above image an example of? Describe its purpose and importance...
- M Mathematics Let x = 4, Evaluate 3x+4x2-8...
- E English What do you learn about dee through the narrators spoken dialogue...
- C Computers and Technology 1. Before operating any power tool, you need to...
- G Geography Where would you like to travel and why? 5 sentences...
Ответ:
40 J
Explanation:
Work = change in energy
W = 1/2 k (Δx)²
First we need to find the value of k.
F = kΔx
10 N = k (0.04 m)
k = 250 N/m
Solving for work
W = (250 N/m) (0.40 m)²
W = 40 J