What was Marie's speed from point A to point B, in miles/minute?

Answer:

C more than 1 second

Explanation:

it will take time since its 4.9 meters and how hard you throw it down

Answer:

The final vertical velocity is greater than the initial vertical velocity

Explanation:

Horizontal Motion

When an object is thrown horizontally with a speed vox from a height h, it describes a curved path ruled by gravity.

The resultant motion is the composition of the vertical motion and the horizontal motion.

The speed in the horizontal direction is always constant:

vx=vox

The speed in the vertical direction starts from zero and gradually increases in time:

vy=g.t

When the object was just launched, t=0, and its vertical velocity is 0

After some time has passed, the object is about to hit the ground, and its vertical velocity is greater than zero, thus:

The final vertical velocity is greater than the initial vertical velocity

Answer:

1. The stone will strike the ground 49.46 m from the base of the cliff

2. A) Approximately 0.542 seconds

B)  Approximately 3.69 m/s

3. A) The time the ball spends in the air is approximately 4.0775 s

B) The horizontal range is approximately  141.25 m.

Explanation:

1. The time it takes the stone to land is given by the equation, t = √(h/(1/2 × g)

∴ t = √(30/(1/2 × 9.81)) ≈ 2.473 seconds

The horizontal distance covered by the stone in that time = 20 × 2.473 ≈ 49.46 m

The stone will strike the ground 49.46 m from the base of the cliff

2. A) The time the ball spends in the air = t = √(h/(1/2 × g)

∴ t = √(1.44/(1/2 × 9.81)) ≈ 0.542 seconds

B) The initial horizontal velocity, u = Horizontal distance/(Time) = 2/0.542 ≈ 3.69 m/s

The initial horizontal velocity ≈ 3.69 m/s

3. A) The time the ball spends in the air is given by the following equation;

t = 2 × u × sin(θ)/g = 2 × 40 × sin(30)/9.81 ≈ 4.0775 s

t ≈ 4.0775 s

B) The horizontal range, R, of the  ball is given by the equation for the range of a projectile as follows;

[tex]Range, R = \dfrac{u^2 \times sin (2 \cdot \theta) }{g}[/tex]

Substituting the known values, gives;

[tex]Range, R = \dfrac{40^2 \times sin (2 \times 30^{\circ}) }{9.81} \approx 141.25 \ m[/tex]

The horizontal range ≈ 141.25 m.

Answer:

mass= 3.5 kg

distance covered= 0.4m

inital speed = 1.5 m/sec

final speed = 0 m/sec

net force

formula for force :

[tex] \fbox{f = m.a}[/tex]

In order to find the force we need to find the acceleration.

According to third equation of Kinematics-

[tex] \bold{ {v}^{2} = {u}^{2} + 2as}[/tex]

where,

v= final velocity

u=inital Velocity

a=Acceleration

s=Distance covered

put the value in the above equation

0= (1.5)²+ 2a x 0.4

-2.25= 0.8a

a = -2.25/0.8

a= - 2.8125 m/sec²

now put the value 0f accleration in formula of force

F = 3.5 x - 2.8125

F= -9.84375 N

Answer:

false

Explanation:

this is what google said

No because the path the electricity needs to follow is broken. In a parallel circuit, electricity has more than one path to follow. Electrons can follow different paths as they flow from the negative side of the battery to the positive side.

Answer:

I once yelled out in zoom "I WANNA KISS A ANIME BOY" Cause of a silly dare

Explanation:

Everyone laughed and I was kicked

Answer:

my brother was pushing the cart at target and the front like got my ankles and I fell in front of everyone and he was just laughing.

Answer:

B. New cells are created from pre-existing cells in the human body.

Explanation:

According to the cell theory, the correct assumption from the student's investigation is that "new cells are created from pre-existing cells in the human body".

So, the student is correct to say that new cells are created from pre-existing cells in the human body.

true

Explanation:

Because I did the test

Answer:

The right answer is True

Answer:-400 n

Explanation:

Answer:

The neutral wire is often confused with ground wire, but in reality, they serve two distinct purposes. Neutral wires carry currents back to power source to better control and regulate voltage. Its overall purpose is to serve as a path to return energy.

Answer & Explanation:

Crashing into the asteroid would cause the satellite to slow down, stop, or reverse direction, because it is a force in the opposite direction to the satellite's motion. Whichever crash was a stronger force would cause it to change motion more. It takes a stronger force to change the velocity of a more massive object.

Answer:

load (l)=400N

Effort(E)=50N

mechanical advantage (MA)= load ÷Effort

(ma)=400÷50

(ma)=8

Explanation:

I copy pasted from the answer from the same question. Remember to first check if ur question is there

Answer:

Its the third law of motion.

Explanation:

Newton's third law of motion states that every action has equal and opposite reaction.

Answer:

1. The subduction zone serves as the meeting point for two tectonic plates.

2. At the Mid- Ocean ridge, decompression melting occurs.

3 What causes the magma to rise is the increase in pressure caused by collection of gases by the magma.

Explanation:

Subduction zone is define as a zone where tectonic plates ( an oceanic plate slides beneath a continental plate) meets and contributes to the rise of magma to the surface in geological sciences.

At the Mid - Oceanic ridge, decompression melting occurs. As mantle ascends beneath the mid-ocean ridge, less and less rock lies above it, so large pressure changes occur, which leads to melting. The melt is less dense than the solid, and rises to the surface to form the oceanic crust.

At the subduction zone the magma that is formed is usually made up of silica rich lava. Thick silica rich magma does not release the gasses very easily so they build up inside the magma chamber. As the gasses collect in the chamber, the pressure rises. It is possible for the pressure to rise so much that the chamber cannot contain the magma and it erupts explosively.

Answer:

True

Explanation:

A loud noise cancels out

A loud noise gives off less energy than a quiet noise : False

Loudness is the intensity of sound heard in a given period. it is dependent on the amplitude of the sound waves.

The loudness of a sound is proportional to the square of the amplitude of the sound wave, meaning that the larger the amplitude of wave, the more the intensity and the more the sound.

Since waves carry energy along, it means a wave with a large amplitude transfers more energy and therefore loud sound.

In conclusion, the louder the sound the more energy it gives off and the quieter the sound the less energy it gives off.

learn more about properties of sound waves : https://brainly.com/question/9898147

#SPJ2

Answer:

correction of farsightedness uses a converging lenses that compensates for the under convergence by the eye. the converging lens produces an image farther from the eye than the object so that farsighted can see it clearly.

Answer:

57,6N

Explanation:

To find the component  of a force on the x-axis we can simply do:

F * cos(36) = 72N * 0.8 = 57,6N

Answer:

y = 1

Explanation:

We need to see the equation given

y = 10/x

So we need to replace the value of x = 10 into the equation.

y = 10/10

y = 1

Answer:

I think it's 10 minutes per km

Answer:

1.4 meters per second (5.0 km/h, 3.1 mph, 4.6ft/s

Answer:

She is likely to crash because her flight gradient is lesser than the flight gradient required gradient to avoid crashing

Explanation:

The given parameters are;

The required gradient of the plane Ashley is flying needs to reach in order to take off and not crash = 360 m/km

The initial elevation of the plane Ashley is flying = Sea level = 0 m

The goal Ashley intends to make = Elevation of 1000 m at 2.8 km. distance

∴ Ashley's goal = Traveling from sea level to 1000 m at 2.8 km horizontal distance

We have;

The gradient  = Rate of change of elevation/(Horizontal distance)

Therefore;

The gradient of Ashley's flight = (1000 - 0)/(2.8 - 0) = 357.143 m/km

The gradient of Ashley's flight ≈ 357.143 m/km which is lesser than the required 360 m/km in order to take off and not crash, therefore, she will crash.

[tex]w = F * S[/tex]

[tex]F = 20\\S = 10\\F * S = 20 * 10 = 200[/tex] Joules <- 1st answer

[tex]w = F * S[/tex]

[tex]1234 = F * 100[/tex]

[tex]F = \frac{1234}{100}[/tex]

[tex]F = 12.34 N[/tex]  <- 2nd answer

Answer: B

Explanation:

Explanation:

distance

speed =_________

time

distance = speed × time

= 2.5 × 5.0

distance = 12.5 m

Answer: yes it is

Explanation: A biotic factor is something that is living. this also apply to plants animals and people. A dinosaur was once a living being so it would be classified as a biotic factors. An abiotic factor is something that is not living .so that would be tables chairs and clothes.

Answer:

1 cm = 10mm

Explanation:

hey there both are equal

Answer:

bonita sisisisiisisisisiisissiissiisiiss

Answer:

It helps prevents falls and supports your body. So having a strong core is beneficial to everyone because it allows your body to function properly. Improved Balance and Stability. Core exercises train the muscles in your pelvis, lower back, hips and abdomen to work together.