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
Leviafan [203]
3 years ago
12

An earthquake causes a 3 kg book to fall from a shelf. If the book lands with a speed of 4.0 m/s, from what height did it fall?

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0
Given:
3kg book
speed of falling of 4.0 m/s
acceleration due to gravity -9.8 m/s² 

Vf² = Vi² + 2 * a * d

Vf = final velocity ; Vi = initial velocity ; a = acceleration ; d = distance

0² = (4 m/s)² + 2(-9.8m/s²) * d
0 = 16 m²/s² -19.6 m/s² * d
-16 m²/s² = -19.6 m/s² * d
-16 m²/s²  / -19.6 m/s² = d
 0.82 m = distance

The 3 kg book fell from the a shelf at the height of 0.82 meters.
You might be interested in
3 - 2(b - 2) = 2 - 7b<br> b =<br><br><br> Please show work
Firdavs [7]
3- 2b +4 = 2-7b
3+4 = 2 - 5b
7 = 2 -5b
5 = -5b
-5b /-5 = -1
b = -1
5 0
3 years ago
The Super Shop and Save store had 120 gallons of milk placed on the shelf one night. During the next morning's inspection, the m
Sergeeva-Olga [200]
18 gallons of milk had passed the expiration date.

Explanation step by step

Multiply 120x 15%
Turn 15% into a decimal which is 0.15 so now it’s 120x0.15 which equals to 18.
8 0
3 years ago
What’s the answer plz!!
Karolina [17]
I think its the secondd
8 0
3 years ago
Read 2 more answers
I need to get 2 answered please help it’s with mean, median and mode
Marat540 [252]
They are all averages

mean=average 4+6=10, 10 divded by 2= 5, the mean is 5

median= middle number, 5 6 7, 6 is the median
mode= most repeated number, so 4,4,4,4,4,4,4,5.5,6       4 is the mode
7 0
3 years ago
Response will be saved automatically.
Charra [1.4K]

Answer:

443.28

Step-by-step explanation:

Subtract 42.24 from 570.3 three times.

3 0
3 years ago
Other questions:
  • Priya measured the perimeter of a square desk and found 248 m. Noah measured the perimeter of the same desk and found 2468 mm. B
    5·1 answer
  • Select the correct answer.
    14·1 answer
  • What is the answer to this question
    15·2 answers
  • Simplify the expression so there is only one positive power for each base. (5^-2 x 4^-4)^-2
    8·1 answer
  • B) fully factorise <br>7x - 49​
    9·1 answer
  • Please help me now plz
    11·1 answer
  • Please help me!!!!!!!!
    5·1 answer
  • Question 3 of 5
    7·2 answers
  • CAN SOMEONE HELP ME PLEASE
    6·2 answers
  • Answer the problem below please. Thank you.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!