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
This is the equation and we need to solve for y 2x+y=7
marysya [2.9K]

Answer: y = -2x + 7

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Samantha is going on vacation for the summer and is trying to choose between two different plans. The first plan costs $450 for
ziro4ka [17]
Pretend the cost of the hotel is called "x" and the amusement park is "y"
make the equations.
450=3x+2y  and  700=5x+3y
since you're solving for amusement park, you basically just solve for y
multiply the first equation by 5 and the second equation by 3.
2250=15x+10y  and  2100=15x+9y
these are a system of equations so subtract one from the other to cancel the x values away.
150=y   so the answer is that a day trip to the amusement park costs $150
5 0
3 years ago
Leela made goody bags for her party and put 5 pieces of candy in each bag. She bought gummies and chocolates yo put in het goody
slavikrds [6]

Answer:

4 ways

Step-by-step explanation:

1 gummy 4 chocolates

2 gummy 3 chocolates

3 gummy 2 chocolates

4 gummy 1 chocolates

This is what i think the answer is hope it helps

5 0
3 years ago
Parallel Lines cut by a transversal
Tresset [83]

Answer:

-4

Step-by-step explanation:

1. They are alternate exteriors meaning they are supposed to be the same so you sort the equation like 134+x=130

2. Then you pass 134 both side like ×=130

-134

3. Which will equal :-4

7 0
2 years ago
If the 13th and 38th terms of an arithmetic sequence are -53 and -128,
love history [14]

9514 1404 393

Answer:

  -2018

Step-by-step explanation:

The n-th term is ...

  an = a1 +d(n -1)

So, the given terms are ...

  -53 = a1 +12d

  -128 = a1 +37d

Subtracting the first from the second gives ...

  (a1 +37d) -(a1 +12d) = (-128) -(-53)

  25d = -75

  d = -3

The 668th term will be ...

  a668 = a1 +d(668 -1) = a1 +667d = (a1 +37d) +630d

  a668 = -128 +630(-3) = -128 -1890 . . . . substitute for a38

  a668 = -2018

7 0
2 years ago
Other questions:
  • 15 POINTS
    15·1 answer
  • Which shows a difference of squares?
    5·1 answer
  • line 1 passes through points (4, -4) and (8,-3) while line 2 passes through points (1,-6) and (-1,2). determine whether the line
    6·1 answer
  • Explain how solve 4^(x+3) = 7 using the change of base formula log base b of y equals log y over log b. Include the solution for
    13·1 answer
  • 3. Write the equation of a line in slope-intercept form that passes through (9, 4) and is
    5·1 answer
  • You chose a college loan plan that is compounded annually. You take out $10,000 on the loan, and it has an interest rate of 5.75
    7·1 answer
  • Which equation represent the following situation : Andre withdrew
    10·1 answer
  • A small company plans to invest in a new advertising campaign. There is a 25% chance that the company will loose $10,000, a 55%
    8·1 answer
  • Evaluate the expression 3.4 ÷ 12a ÷ 4<br> for a = 10
    13·2 answers
  • Show y’all work please Y’all please help me with this I don’t understand
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!