Halpp
will give brainliest

Answer:

19.12 m/s.

Explanation:

The following data were obtained from the question:

Final velocity (v) = 0 m/s

Breaking Acceleration (a) = – 4.57 m/s²

Distance (s) = 40 m

Initial velocity (u) =.?

The initial velocity of the car can be obtained as illustrated below:

v² = u² + 2as

0² = u² + (2 × –4.57 × 40)

0 = u² + (– 365.6)

0 = u² – 365.6

Collect like terms

u² = 0 + 365.6

u² = 365.6

Take the square root of both side

u = √365.6

u = 19.12 m/s

Therefore, the car was initially moving at 19.12 m/s.

The first law

In Newtons first law it states that an object will not change its motion unless a force acts upon it.

Answer:1st law

Explanation:

Answer:

The velocity of Alice (25 m/s) will be greater than that of Tom (0), when  they reach the lake below.

Explanation:

Given;

initial horizontal velocity of Tom is zero since he dropped straight down from the edge.

initial horizontal velocity of Alice is 25 m/s.

Their respective horizontal velocity when they jumped is the same as when they reach the lake below.

If we compare their velocities when they reach the lake, one will be greater than the other, if we neglect air resistance.

Thus, the velocity of Alice (25 m/s) will be greater than that of Tom (0), when  they reach the lake below.

Answer:

B. Induction

Explanation:

Just had it on study island

When objects are charged by induction, they do not need to touch each other. Hence, option (B) is correct.

A charged particle is touched to a conductive medium as part of the charging by conduction process. In this manner, the conductor receives the charges from the charged substance.

Rubbing one particle against another causes electrons to move from one surface to another during the charging by friction process.

An object is charged using induction charging, which doesn't require physical contact between the charged objects. The charged particle is held close to an uncharged conductive substance that is grounded on a neutrally charged material during the charging by induction process.

When a charge is transferred between two objects, an uncharged conductive substance produces an oppositely polarized charge. These were the many charge transfer techniques.

Learn more about charges here:

https://brainly.com/question/27171238

#SPJ6

Answer:

Explanation:

1.25 m/s

Answer:

6 minutes per mile

Answer:

a) y = 16.51 [m]

b) t = 1.83 [s]

Explanation:

To solve this problem we must use two kinematics equations, the first to determine the height to which the ball reaches, and the second equation to determine how long it lasts in the air.

[tex]v_{f} ^{2}= v_{i} ^{2} - (2*g*t)\\[/tex]

where:

Vf = final velocity = 0

Vi = initial velocity = 18 [m/s]

g = gravity acceleration = 9.81[m/s^2]

t = time [s]

Note: the negative sign of the Equation indicates that the acceleration of gravity acts in the opposite direction to the movement of the ball.  The final velocity is zero, since the ball reaches its maximum altitude when the velocity is zero.

Now replacing:

0 = (18)^2 - (2*9.81*y)

y = 16.51 [m]

b)

[tex]v_{f} = v_{i} - (g*t)[/tex]

0 = 18 - (9.81*t)

t = 1.83 [s]

Answer:

A

Explanation:

Gravity

Answer:

2 meters per second

Explanation:

Answer:

The newton’s second law is F=ma

The Gravitational force is [tex]F=\dfrac{Gm_{1}m_{2}}{r^2}[/tex]

Explanation:

Given that,

The equivalent formulas for velocity, acceleration, and force using the relationships covered for UCM, Newton’s Laws, and Gravitation.

We know that,

Velocity :

The velocity is equal to the rate of position of the object.

[tex]v=\dfrac{dx}{dt}[/tex]....(I)

Acceleration :

The acceleration is equal to the rate of velocity of the object.

[tex]a=\dfrac{dv}{dt}[/tex]....(II)

Newton’s second Laws

The force is equal to the change in momentum.

In mathematically,

[tex]F=\dfrac{d(p)}{dt}[/tex]

Put the value of p

[tex]F=\dfrac{d(mv)}{dt}[/tex]

[tex]F=m\dfrac{dv}{dt}[/tex]

Put the value from equation (II)

[tex]F=ma[/tex]

This is newton’s second laws.

Gravitational force :

The force is equal to the product of mass of objects and divided by square of distance.

In mathematically,

[tex]F=\dfrac{Gm_{1}m_{2}}{r^2}[/tex]

Where, m₁₂ = mass of first object

m= mass of second object

r = distance between both objects

Hence, The newton’s second law is F=ma

The Gravitational force is [tex]F=\dfrac{Gm_{1}m_{2}}{r^2}[/tex]

Harmonics, Loop and Harmonic number

Hope this helps :)

Answer:

3.0m/s so it’s number 5

Explanation:

The magnitude of the player's average velocity during the drill is 0 m/s.

The given parameters;

Average velocity is change in displacement per change in time of motion.

[tex]\Delta \bar v = \frac{\Delta x}{\Delta t}[/tex]

where;

The change displacement is zero, since the player moved forward and back to the exact initial position.

[tex]\Delta \bar v = \frac{3(30) - 3(30) }{60} = 0[/tex]

Thus, the magnitude of the player's average velocity during the drill is 0 m/s.

Learn more here:https://brainly.com/question/10425898

Answer:

I would say that the 1 kg ball weighs 1 kg. I don't see the answer choices.

Answer:

15x6=90 meters

Explanation:

i did 15x6 because it runs 15 meters per second

brainliest? >w<

the space between the liquid. particles. increase. the particles of liquid. move faster the liquid gains thermal energy the liquid change. to gas.

Answer:

the space between the liquid. particles. increase. the particles of liquid. move faster the liquid gains thermal energy the liquid change. to gas.

Explanation:

Answer:

Big stars, about 5 - 25 times the mass of sun, usually they collect so much of matter and energy that they just explode, this explosion is called supernova. A supernova is a powerful and luminous stellar explosion. This astronomical event occurs during the last evolutionary stages of a massive star.

If my answer helped, please mark me as the brainliest!!

Thank You!

Answer:

Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time.

Explanation:

The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time.

Answer:

The cat went up

Explanation:

Answer:

d. is formed from pressure and heat

Explanation:

it is formed from hot magam

The voltage of the circuit will be 0.75 V.The potential difference between the circuit is known as the voltage.

Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.

This current-voltage connection may be expressed mathematically as,

The Equation of Ohm's Law

[tex]\rm V=IR \\\\ V= 0.05 \times 15.2 \\\\\ \rm V=0.75 \ V[/tex]

The voltage of the circuit will be 0.75 V.

Hence option D is correct.

To learn more the ohm's law refer to the link;

https://brainly.com/question/796939

Answer:

melting.

Explanation:

The process in which a solid changes to a liquid is called melting. The melting point is the temperature at which a solid changes to a liquid. 

Answer:

1 m/s  

Explanation:

2 to 3 second interval would be zero.

3 to 4 is 2 m/s

so average is 1 m/s

Explanation:

t=2s

u=10

v=5

a=?

v=u+at

5=10+2a

2a=-5

a=-2.5

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 244 g

volume = 90 mL

So we have

[tex]density = \frac{244}{90} = \frac{122}{45} \\ = 2.71111111...[/tex]

We have the final answer as

Hope this helps you