25m/s to miles/hr step by step

Answer:

a) 2.28 m/s²

b) 159.86 m

Explanation:

Part A:

u = 0 m/s

v = 27 m/s

t = 11.8 seconds

a = ?

Formula:

v = u + at

=> 27 = 0 + a(11.8)

=> 27 = a(11.8)

=> a(11.8) = 27

=> a = 27/11.8

=> a = 2.28 m/s²

Part B:

s = ?

Formula:

s = (v² - u²)/2a

s = (27² - 0²) /2(2.28)

  = 729/4.56

  = 159.86 m

Answer:

-The air resistance statement goes with the pieces of paper statements

-The force of gravity statement goes with the dog statements

-The acceleration due to gravity goes with the two inflated balls

Answer:

Yes, if θ = 45°

Explanation:

I assume this is the motion of the simple pendulum

T = 2π × [tex]\sqrt{\frac{L}{g } }[/tex]

=> [tex]\frac{T1}{T2 }[/tex] = [tex]\sqrt{\frac{g2}{g1} }[/tex]

Given T1= 3s g1= 9.79 g2= 9.82

=> T2 = 3.00459 s

I just hope this pic will help you

Explanation:

By the formula,

[tex]s=ut+\frac12at^2[/tex]

[tex]-3.5=0+\frac12a(0.809)^2[/tex]

[tex]a=-10.659 ms^{-2}[/tex]

where a is the acceleration of objects by gravity.

We also know that by the Law of Gravitation,

[tex]F=-\frac{GMm}{r^2}=ma[/tex]

[tex]a=-\frac{GM}{r^2}[/tex]

The mass of the planet is given by

[tex]M=\rho V=\rho(\frac 43\pi r^3)[/tex]

So

[tex]a=-\frac{G(\rho\frac 43\pi R^3)}{r^2}= - \frac{(6.67 \times 10^{-11})(5500)(\frac43)\pi R^3}{(R+3.5)^2} = -10.659[/tex]

Since R>>3.5, so we approximate

[tex](R+3.5)^2\approx R^2[/tex]

Solving the last equation,

[tex]R=6936.483 km[/tex]

Speed = distance / time

Part 1: 40 km at 80 km per goir = 0.50 hours

Part 2: 40 km at 40 km per hour = 1 hour

The time of the trip was 1.5 hours

Total distance was 40 + 40 = 80 ins.

Speed = distance / time = 80/1.5 = 53.33 km/he ( round answer as needed)

Explanation:

Compazine belongs to class of drugs called Antiemetic Agents, Antipsychotics, Phenothiazine.

Answer:

(4.9)×(12)^2 m/s

Explanation:

velocity =1/2 × g× t^2

g=9.8m/s^2

t=12sec

Answer:

because in vertical slope force of gravity is more than compared to slanted slope

Answer:

because gravity is always pulling objects down so when you climb upward gravity weighs you down, you have to use effort to move yourself in the opposite direction that gravity is pulling you that is why it is harder to climb up a slope.

Answer:

can you like zoom in i cant see that much.

Explanation:

Answer:

210000.................

The specific heat capacity of glycerine is 2333.3 J/(kg·K).

We can use the formula for heat (Q) absorbed by a substance:

Q = mcΔT

Where Q is the heat absorbed, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

We know the mass of glycerine (m = 2 kg), the time for which heat is supplied (t = 35 minutes = 2100 seconds), the rate of heat supply (P = 100 W), the initial temperature (T1 = 30°C = 303 K), and the final temperature (T2 = 75°C = 348 K).

First, we need to calculate the total heat absorbed by the glycerine:

Q = Pt

Q = 100 W × 2100 s

Q = 210000 J

Next, we can calculate the change in temperature:

ΔT = T2 - T1

ΔT = 348 K - 303 K

ΔT = 45 K

Finally, we can calculate the specific heat capacity of glycerine:

c = Q/(mΔT)

c = 210000 J/(2 kg × 45 K)

c = 2333.3 J/(kg·K)

Therefore, the specific heat capacity (c) = 2333.3 J/(kg·K).

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Answer:

Power is 3000 W

Explanation:

Momentum = mass × velocity

[tex]300 = 20 \times v \\ velocity = 15 \: {ms}^{ - 1} [/tex]

For power:

[tex]P = \frac{force \times distance}{time} \\ \\ P = force \times ( \frac{distance}{time} )[/tex]

but distance/time is velocity, so:

[tex]P = force \times velocity[/tex]

but force = mass × acceleration:

[tex]P = (mass \times acceleration) \times velocity \\ P = (20 \times 10) \times 15 \\ P = 3000 \: \: watts[/tex]

[ taken acceleration to be 10 m/s² ]

Answer:

wavelength = 0.28m

Explanation:

wavelength = velocity/ frequency

wavelength = 343/1210 = 0.28m

Answer:

the modern particle theory of matter was accepted in the mid-ninteenth century. Aistotle's continoues theory of matter was overturned. They gave matter order and determine many of its properties. your welcome :)

Answer:

Circled in Red...plus the scales, of course.

Explanation:

Answer:

3.4 m/s2

Explanation:

Multiple choice Questions about the statement true and how you can be separated by filtration and the way you treat your business and your business to make your life easier and easier to understand and understand the importance of life and damage

The new approximate acceleration of the airplane will be D. 3.4 m/s2

Newton's second law of motion  states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.

Initial mass = 950 kg

mass of piolet = 65 kg

reduced mass = 950 - 65 = 885 kg

according to Newton's second law of motion

force = mass * acceleration

3000 N = 885 kg * acceleration

acceleration = 3000 / 885  = 3.39 m/s^2 = 3.4 m/s^2

correct answer is D. 3.4 m/s2

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Answer:

perdón yo no hablo inglés

Please find attached photograph for your answer. Hope it helps. Please do comment. The option is c. 15m/s.

maps are for locating an area or a country

Explanation:

they are really beneficial because u will have the advantage to know every country and its location and lines of longitude and latitudes

Answer:

Fermi is used to express nuclear radius

Answer:

the most suitable unit for expressing nuclear radius is Fermi.

Answer:

P = W / t = m g s / t = m g v       where work by auto = m g s

30 kw = 30000 watts = 30000 J / s

Work wasted = F v       as shown above relating work and power

Work done against incline = m g s sin 8.75  and power against incline

= m g v sin 8.75 = 1222 v Joules / sec

power in moving auto = power available - power lost to friction

power in moving auto = 30000 - resistance = 30000 - 910 v

1222 v = 30000 - 910 v

v = 30000 / 2132 = 14 m/s

Note: constant resistance to motion must mean P = W / t = F s / t = F v

Maximum speed will be v = 14.07 m/s

Power is defined time rate of doing work or delivering energy.

Work done = Force * displacement

Power = work done / time

           = (Force * displacement ) / time

since , displacement / time = velocity

Power  = force * (displacement / time ) = force  * velocity

Power = mass * acceleration * velocity (  as force = mass * acceleration)

since , car is travelling up in an incline of 8.75° to the horizontal

hence , it will have two components of velocity

vertical component = v sin (theta ) = v sin(8.75°)

horizontal component = v cos (theta)= v cos (8.75°)

Power = m* a * v sin (theta )

          = 820 * 9.8  * v *sin (8.75°)                        ( a = g = 9.8 m[tex]/s^{2}[/tex])

         = 1221.472 v

Power lost due to resistance in motion  = 910 * velocity = 910 v

Power = Total power - power lost due to resistance in motion

           = 30 * [tex]10^{3}[/tex]  - 910 v

30 * [tex]10^{3}[/tex]  - 910 v = 1221.472 v  

v = 14.07 m/s

Maximum speed will be v = 14.07 m/s

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The answer you are looking for is 22 mph.

Solution:

s=speed

d=distance

t=time

Setting up the formula for the speed of an object with distance and time:

s=d/t

Substituting the given values,

s=88 miles/4 hours

So, therefore, the final answer is 22 mph.

I hope this helped answer your question for you. Good day to you.

Answer:

352 miles answer

Explanation:

guessing that he kept going in a constant speed of 88 miles first you multiyply 88x4 which gives you 352 hoped it helped

The object is moving with constant or uniform acceleration and in average speed

The object is de accelerating

The object deaccelerated and came to rest so fast.

The object moves slowly first then accelerated.

The object accelerated at first so fast then move with constant acceleration then again accelerated .