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
ra1l [238]
3 years ago
12

An object is dropped from a platform 100 feet high. Ignoring wind resistance, what will its speed be when it reaches the ground?

Physics
2 answers:
ICE Princess25 [194]3 years ago
7 0

<span>if we assume the origin is at the dropping point and the object is merely dropped and not thrown up or down then y0 = 0 and v0 = 0. The equation reduces to </span>

<span>y = 0 + 0t + ½gt² </span>
<span>y = ½gt² </span>

<span>t = √(2y/g) </span>

<span>in the ft - lb - s system </span>

<span>y = -100 ft </span>
<span>g = -32.2 ft / s² </span>

<span>t = √(2y/g) </span>
<span>t = √(2(-100) / (-32.2)) </span>
<span>t = 2.5 s</span>
Irina-Kira [14]3 years ago
4 0

the answer to the question is 2.5

You might be interested in
What does a wave do that is so important?
expeople1 [14]
Waves transmit energy without transmitting matter, This means that we can move energy or information from one place to another without moving any substance from one place to another.
5 0
3 years ago
Read 2 more answers
An empty paper cup is the same temperature as the air in the room. A student fills the cup with cold water. Which of the followi
Vika [28.1K]

Answer:

C

Explanation:

It is

7 0
3 years ago
What are the parts of a wedge and their function?​
Svet_ta [14]

Answer:

A wedge is a machine that consists of two inclined planes, giving it a thin end and thick end. A wedge is used to cut or split apart objects. Force is applied to the thick end of the wedge, and the wedge applies force to the object along both of its sloping sides. This force causes the object to split apart

5 0
2 years ago
Read 2 more answers
How is a scientific theory different from a scientific law?
Anuta_ua [19.1K]
Answer:

Scientific theory is a well-supported explanation of an occurrence of a natural phenomenon. Scientific law is a description of a natural phenomenon that is always observed to occur under specific circumstances.

Explanation:

5 0
3 years ago
hergy A Sprinter runs at a a forward velocity of 10,9 m/s. If the sprinter has a mass of 72.5 kg, What is the Sprinter's Kinetic
Nina [5.8K]

Answer:

4306.8625 J or 344549/80J (fraction form)

Explanation:

kinetic energy= \frac{1}{2\\}mv²

= \frac{1}{2}×72.5×10.9²

= 4306.8625 J  or 344549/80 J

7 0
1 year ago
Other questions:
  • Olivia bought new gym shoes to play volleyball because she kept slipping when she ran in her old shoes .how will the new soles h
    11·2 answers
  • It usually takes more force to start an object sliding than it does to keep an object sliding because static friction is usually
    6·1 answer
  • What three things do cells / organisms have to do to maintain homeostasis? ____ from food, get rid of ____, and _____(mitosis/me
    13·1 answer
  • Types of mechanical waves include
    12·1 answer
  • Joe is measuring the time it takes for a ball to roll down a ramp. In this experiment Joe takes the measurement 5 times and gets
    9·1 answer
  • An iron wire and a copper wire of the same length have the same potential difference applied to them. What must be the ratio of
    10·1 answer
  • An electron is moving northward in a magnetic field. The magnetic force on the electron is toward the northeast. What is the dir
    12·1 answer
  • Differences between looping and simersaulting​
    8·1 answer
  • What do you mean by work?​
    11·1 answer
  • If the roller coaster car in the above problem were moving with twice the speed(20m/s), then what would be its new kinetic energ
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!