What is vi for an object dropped from a raised position?

What Is Vi For An Object Dropped From A Raised Position?

Answers

Answer 1

Answer:

Option C. vi = 0

Explanation:

An object held at a particular height above the ground is considered to be at rest. If the object is release from that height, the initial velocity (vi) is considered to be zero since the object is at rest or at a stand still position.

Thus,

Initial velocity (vi) = 0


Related Questions

The U-tube contains a coloured liquid of density 9.6 x102 kg/m3. If the difference in height between the liquid levels in the two arms of the U-tube is 0.16m, calculate the excess pressure (above air pressure) in the cylinder. (Take g = 10 N/kg)​

Answers

Explanation:

P = ρgh

P = (9.6×10² kg/m³) (10 N/kg) (0.16 m)

P = 1536 Pa

Rounded to two significant figures, the pressure is 1500 Pa, or 1.5 kPa.

What is the difference between m/s and m.s.​

Answers

Answer

m/s rate of change of dispalcement per sec. ie velocity

m/s^2 is (m/s)/s ie rate of change of velocity per sec. ie accelerationplanation:

Answer:

Hi there. I hope your having an amazing day. Here is the answer to you question. Give me brainlest please!

Explanation:

m/s rate of change of displacement per sec. ie velocity

m/s^2 is (m/s)/s ie rate of change of velocity per sec. ie acceleration plantation

If forces acting on an object are unbalanced, which factor may result from an unbalanced force? A.The net force is negative. B.There is zero net force. C.The forces cancel each other out. D.There is no change in motion.

Answers

Answer:

A. The net force is negative.

Explanation:

just took the test :)

Answer:

#A

Explanation:


Find the range of a projectile launched at an angle of 30° with an initial velocity of 20m/s.​

Answers

Answer:

The range is 35.35 m

Explanation:

Projectile Motion

It's the type of motion that experiences an object projected near the Earth's surface and moves along a curved path exclusively under the action of gravity.

Being vo the initial speed of the object, θ the initial launch angle, and [tex]g=9.8m/s^2[/tex] the acceleration of gravity, then the maximum horizontal distance traveled by the object (also called Range) is:

[tex]\displaystyle d={\frac {v_o^{2}\sin(2\theta )}{g}}[/tex]

The projectile was launched at an angle of θ=30° with an initial speed vo=20 m/s. Calculating the range:

[tex]\displaystyle d={\frac {20^{2}\sin(2\cdot 30^\circ )}{9.8}}[/tex]

[tex]\displaystyle d={\frac {400\sin(60^\circ )}{9.8}}[/tex]

[tex]d=35.35\ m[/tex]

The range is 35.35 m

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Which features do sound waves have that ocean and light waves do not? Check all that apply.

compressions
rarefactions
amplitude
wavelength
crests
frequency
speed

(I know one is compressions but I can't figure out the others and i don't want to get it wrong, please help!!)

Answers

Answer:

Explanation:

compressions and rarefactions

Answer:

Compressions

-and-

Rarefactions

Explanation:

What is the mass of an object that has a force of 89 n and an acceleration of 25 m/s2

Answers

Answer:

3.56g

Explanation:

You would use the formula F= ma

F= 89N

A= 25m/s^2

M=?

89= 25*m

is it true that scientific theories and scientific laws both describe observed events??? provide evidence!!!!! only 2 people could answer so if you can't then comment and provide evidence thank you very much!!!!!!

Answers

Answer:

I'm not positive but I think the answer is Yes, because both scientific laws and theories are based on evidence.

Explanation:

Sorry I don't have notes on this, hope this helps! :)

An eagle is flying horizontally 16.4 meters above a lake at a speed of 9.3 m/s, carrying a small pumpkin in its talons. The pumpkin slips free. How far horizontally will the pumpkin travel after it slips from the eagle until it hits the ground?

Answers

Answer:

The horizontal distance the pumpkin will travel after it slips from the eagle is 17.02 m

Explanation:

Given;

height above the ground, h = 16.4 m

speed of the eagle, v = 9.3 m/s

The time it will take the pumpkin to fall at the given height is calculated as;

[tex]t = \sqrt{\frac{2h}{g} }\\\\t = \sqrt{\frac{2*16.4}{9.8} }\\\\t = 1.83 \ s[/tex]

The horizontal distance traveled at this time is given by;

x = vt

x = (9.3)(1.83)

x = 17.02 m

Therefore, the horizontal distance the pumpkin will travel after it slips from the eagle is 17.02 m

HELP! NEED THE ANSWER IN 6 MINS!!!!!!!!!!!!!!!

Answers

Answer:

C

Explanation:

What is another example of radiation
(A) Warm air rising
(B) Heat from an old-fashioned radiator
(C) Batteries
(D) Touching a stove and burring your hand

Answers

Batteries are another example of radiation

Select the correct answer.
Which statement about pneumatic systems is true?
A.
Pneumatic systems generate greater force than hydraulic systems.
B.
Pneumatic systems are safe to use at any level of pressure.
C.
Pneumatic systems are more expensive than hydraulic systems.
D.
Pneumatic systems are cleaner than hydraulic systems.

Answers

Statement D about pneumatic systems is true. Pneumatic systems are cleaner than hydraulic systems.

What is the pneumatic system?

Pneumatic systems are employed in a wide range of manufacturing and assembly applications. They can be used to transport objects on production lines as well as in maintenance facilities.

In hydraulic systems liquid is used as fluid for the force transmission. While in the pneumatic system air is used causing more cleanliness in the system.

The pneumatic systems are cleaner than hydraulic systems.

Hence, a statement D about pneumatic systems is true.

To learn more about the pneumatic system refer to:

https://brainly.com/question/20322086

#SPJ1

please help
im on my sisters acc btw lol

Answers

Answer:

Dumbell flys - Pectoral

One Arm Rows - Latissimus Dorsi (Lat)

Pushdowns - Triceps

Machine Back Press - Shoulders

Explanation:

A periodic wave is a wave that follows a repeating pattern as it propagates through space. That is, the oscillating pattern repeats at regular intervals of time. This repeating motion is also known as periodic motion

Answers

Answer:

Simple harmonic motion

Explanation:

What is simple harmonic motion?

"Simple harmonic motion is a type of motion directed along a straight line, whose acceleration is fixed towards a point  and is proportional to its distance from that point"

An object is said to be in simple harmonic motion if the following occurs:

• It moves in a uniform path.

• A variable force acts on it.

• The magnitude of the force is proportional to the displacement of the mass.

• The force is always opposite in direction to the displacement direction.

• The motion is repetitive and a round trip, back and

  forth, is always made in equal time periods

i would appreciate it if u would answer

Answers

Answer:

A) Kinetic energy and gravitational energy

Explanation:

The blimp has kinetic energy, because it is moving. When it circles the event, it gains and uses kinetic energy. It also has potential energy because it has the potential to go a lot faster, and because it has so much stored energy and pressure.

Hope this helps!

Two teams are competing in a tug-of-war contest. Team A is pulling at 4000N and Team B is pulling at 4900N is the opposite direction.

Answers

Answer:

There is 8900N of force on the rope and team B wins

Explanation:

6. Another engine reaches its top speed from rest in 7.5 s. It is able to perform 250,000 J of wok in
that time How much power does this engine have in that time?

Answers

Answer:

0.8N

Explanation:

your welcome:)

OC wykonuje około 112 pełnych wahnięć skrzydłami w ciągu jednej sekundy Zaznacz poprawne dokończenie zdania okres drgań skrzydeł osy wynosi około a 112 sekund b 112 h z c9n s d 0,009 h l z

Answers

Answer:

T = 0.009 s

Explanation:

It is given that, an OC makes about 112 full wing swings in one second. We need to find the oscillation period of the wasp's wings.

No of oscillations per unit time is called the frequency of an object. It means 112 is the frequency of wing swings. Let T is the oscillation period. It is equal to the reciprocal of frequency as follows :

[tex]T=\dfrac{1}{f}\\\\T=\dfrac{1}{112}\\\\= 0.00892\ s\\\\=0.009\ s[/tex]

Hence, the oscillation period is 0.009 s.

Gregory's apartment catches fire, and he has to replace his sofa. Which policy will most likely cover the cost of replacing the sofa?

Answers

Answer:

Gregory's apartment catches fire, and he has to replace his sofa. Which policy will most likely cover the cost of replacing the sofa

An electric heater takes 1.2kwh in 30min at 120V having an efficiency of 99%.The heat energy required boil a certain amount of water is 99KJ.If the current taken by heater is 20 amp at 120V.Find the time required to boil water?

Answers

Answer:

Explanation:

Power of the heater = P watt .

P x .5 = 1200

P = 2400 W

If resistance of heater R

V² / R = 2400

120²/ R = 2400

R = 6 ohm .

heat to be produced = 99000 J

Current be I

I²R t  x .99 = 99000

20² x 6 x t x .99 = 99000

t = 41.67 s

What current flows through a bulb if 360 C of charge moves through
a bulb in 20 minutes?

Answers

Answer: A current of 1 A is flowing in a circuit if a charge of 1 coulomb passes any point in the circuit every second.

1 Amp = 1 Coulomb per second

We can write this formula as:

Current (I) = Charge (Q) / Time (t)

Charge (Q) = Current (I) x Time (t)

Explanation:

A positive ion is called a ____________ and a negative ion is called an

Answers

Answer:

Cation

Explanation:

Best way to remember this one is a CATion is PAWS-itive!

Which of the following describes the acceleration of an object with constant velocity?

a) Negative acceleration
b) Positive acceleration
c) Not enough acceleration to tell
d) No acceleration

Answers

A) Negative acceleration

You are traveling down the highway when you notice a cop 200 meters ahead of you. For the next 5 seconds, you step on the bake to avoid a speeding ticket. The brake causes an acceleration on your car of -2.0 m/s^2.
What is the time it takes?
What is the displacement of your car?
What is the acceleration of your car?
Write the equation you will use to solve the problem.
What was your initial velocity?

Answers

Answer:200 5 -20 = v=323

Explanation:

PLS HELP ME THIS IS DUE TONIGHT

Answers

By listening for it underwater, using SONAR.

Hope this helped!

PLEASE HELP ASAP...TIMED TEST. PLEASE ANSWER WITH AT LEAST A PARAGRAPH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A scientist wants to analyze signals from outer space. Her lab has sensors to detect sound waves, radio waves, and seismic waves. Which of these sensors will provide the best information? Explain your reasoning.

Answers

Answer: I am pretty sure that you should pick radio waves.

Explanation: The scientist should use radio waves. I think this because you can use the radio waves to analyze the signals from outer space. This will work much better than anything there, to analyze it the best possible.

The best I could do.

HEY GUYS IS THIS TRUE OR FALSE????????

Answers

answer:
false

explanation:

Pls someone help 10points!!!
The count rate of a rodioactive material is 800 count\min. If the half-life of the material is 4 days, what would the count rate be in 16 days later.​

Answers

Answer:

it is 45

Explanation:

i really need help with this ​

Answers

Answer:

The Moon

Explanation:

F=MA

160=98a

a=1.632563061m/s²

This value is closest to the Moon's value

When using a liquid as a solvent, what could be the state(s) of matter of the solute?

Answers

Answer:

Explanation:

it can be a gas like carbon dioxide in soda

it can be liquid like alcohol in water

it can be solid like sugar and salt

Answer

✔ all three states

Explanation:

TOOK THE TEST

You are designing a rotor ride for an amusement park. What design will enable the rider to feel the greatest Fn (Normal Force)?
a. Decrease the velocity of the ride and increase the radius
b. Decrease the velocity of the ride and decrease the radius
c. Increase the velocity of the ride and increase the radius
d. Increase the velocity of the ride and decrease the radius

Answers

Answer:

d. Increase the velocity of the ride and decrease the radius

Explanation:

The normal force in the amusement park ride is produced by the centripetal force. The formula for this force is given as follows:

Fn = mv²/r

where,

m = mass of the body,

v = velocity of the body

r = radius of the path

Therefore, it is clear from the formula that force has a direct relation with the square of velocity and inverse relation with the radius of path. Hence, the design that will enable the rider to feel the greatest Fn will be:

d. Increase the velocity of the ride and decrease the radius

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