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
jeka57 [31]
3 years ago
14

A falling object accerlates from -10.0m/s to -30.0m/s how much time does that take

Mathematics
1 answer:
Leya [2.2K]3 years ago
5 0

Answer:

2.04 seconds

Step-by-step explanation:

Falling objects near the surface of the earth have an acceleration of -9.81 m/s².

Acceleration is the change in velocity over change in time:

a = (v − v₀) / t

-9.81 = (-30.0 − (-10.0)) / t

-9.81 = -20.0 / t

t = 2.04

It takes 2.04 seconds.

You might be interested in
Please help me out with this
marin [14]
243, 729 ... multiply each number by 3
4 0
3 years ago
Read 2 more answers
Simplify 0.6 kg : 3/4 kg : 400 g​
enyata [817]

Answer:

0.6 kg x .4 kg /.75 = 0.32 kg

7 0
3 years ago
How much material is needed to construct a triangular tent that is 6 feet wide 4 feet tall and 8 feet long with side measurement
jonny [76]

Answer: 152ft^2

The amount of material needed to construct the tent is 152ft^2

Step-by-step explanation:

The amount of material needed to construct a triangular tent= the surface area of the triangular tent.

S.A = area of the 2 side rectangles + area of the 2 side triangles + area of the base.

S.A = Ab + At + Ar ....1

Area of the base Ab= Length × width = 8×6 = 48ft^2

Area of the two triangles At = 2 × 0.5 × width × height

At = width × height = 6×4 = 24ft^2

Area of the two rectangles Ar = 2 × side measurement × length

Side measurement is given as 5ft.

or it can be calculated using;

Side length can be calculated using Pythagoras theorem.

Examining the figure attached, we can see that;

Side breadth b = √(h^2 + (w/2)^2)

b = √(4^2 + (6/2)^2) = √(16+9) = √25

b = 5ft

Ar = 2×5×8 = 80ft^2

From eqn1, S.A can be solved as;

S.A = 48 + 24 + 80

S.A = 152ft^2

7 0
4 years ago
Please help me!<br><br><br> 10.6 cm<br> 13.5cm<br><br> Area=?
frozen [14]
Multiply those 2 numbers and divide that answer by 2
3 0
3 years ago
Scarlett made seven dozen sugar cookies. She needs 138 cookies for the cookie exchange. How many more cookies does she still nee
Serggg [28]

Answer:

54 cookies

Step-by-step explanation:

seven dozen means 7 * 12 cookies

because one dozen = 12 cookies, so having seven dozen means have seven, one dozen batches

seven dozen = 7*12 = 84 cookies

she already made 138

138 - 84 cookies = 54 cookies left to go

54 cookies

4 0
3 years ago
Other questions:
  • Help please I'm trying to graduate (Only #3)
    5·1 answer
  • 1/4 of 12 bottles of water =
    7·1 answer
  • For the breakfast buffet, Mr. Walker must equally divide 12 loaves of bread between seven platters. How many loaves of bread are
    15·1 answer
  • The graph shows a probability distribution P(X)P(X) for a discrete random variable X.
    11·1 answer
  • Which statement is true about the value of the expression below? (-2^3)^-2
    10·1 answer
  • Six trigonometric functions when an angles coordinates are (12,5)
    8·1 answer
  • Given the function below, find f(-7)<br> f(x) = -2x -1
    6·1 answer
  • How do you write 6 = h(2) as an ordered pair?
    5·2 answers
  • Just help please need to pass
    9·2 answers
  • Simplify the expression​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!