A car starts from rest and retains the acceleration of 4m/s² in 20 second. calculate its final velocity.
step by step

ice cube to water, butter in pan, plastic when burned, candles, popsicles

Answer:

Below

Explanation:

Here is what newton's first law states :

     " An object will remain in straight line motion due to inertia unless acted on by an external force"

If you've ever been on a roller coaster you would know that when you go over the top of the roller coaster you feel lighter or feel like you are being lifted out of your seat. This is due to the effect of interia! Because the roller coaster car is a mass, it wants to continue in the direction it is traveling. If the roller coaster is going up the hill, the acceleration of the coaster wants to keep pushing you up. However, when the coaster goes over the hill, the force of gravity is pulling you down. The track forces the coaster to go down, and gravity is the force that is pulling it down. This is the force that changes the object's motion.

Hope this helps!

The total potential energy associated with the jumper at the end of his fall is 90,000 J.

The given parameters;

The total potential energy associated with the jumper at the end of his fall is calculated as follows;

U = ¹/₂kx² + mgΔh

where;

Δh is the change in height after falling

U = ¹/₂(32)(75)²  + (51)(9.8)(0)

U = 90,000 J

Thus, the total potential energy associated with the jumper at the end of his fall is 90,000 J.

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Explanation:

hope this helps you.

Answer:

yoga

Explanation:

Yoga would be the best exercise to achieve this goal, therefore the correct answer is option A.

Exercise is any activity that utilizes the physical movements of the body that improves a people's health, endurance, and wellbeing while lowering their chance of contracting illnesses. It enables the person to keep their body weight in a healthy weight range.

As given in the problem statement Marina comes from a family with a lot of heart disease. She knows that she will have to go out of her way to make sure that her heart stays strong and healthy.

In a different study, patients with heart failure who completed an eight-week yoga practice demonstrated improvements in their level of well-being and ability to exercise. Additionally, they had reduced blood sugars of inflammation-related indicators, which is linked to cardiovascular disease.

Thus, the appropriate answer for the given problem is option A.

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Answer:

Magnetization is the density of magnetic dipole moments that are induced in a magnetic material when it is placed near a magnet. ... Magnetization is also known as magnet polarization.

Answer: Its way to small can you make it bigger so i can answer.

Explanation:

Answer:

-32

Explanation:

Answer:

I think the answer is A,B,C

Explanation:

Answer:

a)200 mph

b)80 mph

c)-40 mph

d)97 mph

e)56 mph

(note: i rounded the answer for d, it was a repeating decimal)

Explanation:

a) 3s-0s=3s 600m-0m=600m 600m/3s=200m/s

and it is the same for the rest. Use the explanation for A as a example.

So you take the final variable or speed and subtract it by the starting, then divide that by the time elapsed. Hope this helped!

weight and mass.

Explanation:

Weight and Mass Mass is a measure of the amount of matter in an object; weight is a measure of the gravitational force exerted on an object. The force of gravity on a person or object at the surface of a planet is known as weight.

Answer:

It's the objects weight

Explanation:

A lighter object will fall slower than a heavier object

Answer:

i) 180m ii) 6sec ii)180m

Explanation:

i) Hmax = U²/2g

= 60²/20

= 3600/20= 180m

ii). Tmax= U/g

= 60/10= 6sec

iii). X= ut²+ 1/2gt²

since U is 0,then ut=0

X=0+ 1/2×10×6²

X=5×36= 180m

hope its clear??

To increase the rate of the succinate forming fumarate you can increase the ATP and the enzyme that catalyzes this reaction

The Krebs cycle, also known as the citric acid cycle comprises a set of chemical reactions that are essential for organisms to obtain energy.

One of the steps in the cycle involves the use of succinate with a chemical formula of C4H6O4 to form fumarate or C4H4O4. This means in this reaction it is necessary to remove 2 hydrogen atoms.

This process requires two main factors:

Based on this, the reaction can be faster if there is more succinate dehydrogenase or if the energy increases.

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Hi there!

This collision is an example of an inelastic collision since kinetic energy is lost from the collision.

We can represent this using the conservation of momentum formula:

m1v1 + m2v1 = m1vf + m2vf

Where:

m1 = blue ball

m2 = green ball

We know that the final velocity of the blue ball is 0, so:

m1v1 + m2v1 = m2vf

Rearrange to solve for the speed of the green ball:

(m1v1 + m2v1)/m2 = vf

Plug in given values:

((0.15 · 3) + (0.15 · 2)) / 0.15 = 5 m/s

Answer:

Charges on rod and cloth : opposite

Effect attract.

Explanation:

Opposite charges attract each other.

Whereas, Same charges repel each other.

The row that represents the nature of the charges and effect on both the cloth and rod is ; ( D ) Charges on rod and cloth are ; opposite while effect is ; Attract

When a plastic rod is rubbed against a nylon cloth it becomes negatively charged while the nylon cloth becomes positively charged.  

Opposite charges do not repel each rather they attract each other. therefore after rubbing the plastic rod with the nylon cloth they will become attractive to each other and other oppositely charged materials.

Hence we can conclude that the materials will have opposite charges and will attract each other.

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Hi there!

According to Newton's second law:

∑F = m · a, where:

∑F = net force (N = kgm/s²)

m = mass (kg)

a = acceleration (m/s²)

Rearrange to solve for acceleration:

F/m = a

20N / 4.0kg = 5 m/s²

Using thermodynamics

[tex]\\ \sf\longmapsto Q=mc\Delta T[/tex]

[tex]\\ \sf\longmapsto Q=2(4184)(0-41.3)[/tex]

[tex]\\ \sf\longmapsto Q=8368(-41.3)[/tex]

[tex]\\ \sf\longmapsto Q=345598.4J[/tex]

Answer:

Kinetic Energy

Explanation:

Answer:

kinetic

Explanation:

ururhrhrrhrhhrhrhrhrhrhrhhrhrrhehhrhehehehehehehe

The heat coming from the sun warms the land more quickly than the sea. As a result of these, the air near the land warm up and rises and the cooler air from the sea moves in to replace the risen air. The correct answer is option A

There will be heat transfer from a region of higher temperature to the region of lower temperature. But in the case of land and sea breeze, the transfer of heat are the result of convectional current in nature. Because the land is a better absorber of heat and also has a lower specific heat capacity compare to sea, during the day, the heat coming from the sun warms the land more quickly than the sea. As a result of these, the air near the land warm up and rises.

The cooler air from the sea moves in to replace the risen air.

Why do ocean winds or sea breezes blow toward shore during the day ? It is because air over the beach heats up, rises and is replaced by ocean air.

Therefore, option A is correct

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Answer:

Atomic number...

Explanation:

The number of protons is the same as the number of electrons. The Atomic mass is the number of both the neutrons and number of protons.

Please mark BRAINLIEST.

Answer:

10 / 80 amount of potassium-40 remaining

1/8 = 1/2 * 1/2 * 1/2 = 3 half-lives

3 half-lives * 1.3E9 yrs / half-life = 3.9E9 yrrs

After 3.9 billion years the 80 g will have decayed to 10 g

Answer:

3.9 billion years

Explanation:

i took test

Given : Sound travels at a speed of 330m/sec how long does it take the sound of thunder to travel 1485m

Solution : According to the question, here we are given that the speed of sound is 330m/sec and distance travelled is 1485m. So, time needs to be find out. For this we need to use a specific formula.

Time = Distance/Speed

Henceforth, time taken by the sound is 450 sec

Answer: it’s Supernovae that are moving away at an accelerating rate.

The evidence for the existence of dark energy is that Supernovae that are moving away at an accelerating rate.

is evidence for the existence of dark energy.

Much more evidence took taken earlier the year from a survey of 250,000 galaxies.

Dark matter are often known to be matter that we cannot see but one which can exerts a gravitational influence on stars and galaxies.

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Answer:

V = S / t = 60 * 3.6 km / 2.4 hr = 90 km / hr

Answer:

Francine ran a quarter of a mile or 0.75 percent of a mile.

Explanation:

a)The analog signal's pitch and frequency change each time. It is continuous in the digital signal.

A digital signal is one in which data is represented as a series of discrete numbers.

To reduce the influence of noise in communication, a digital signal is utilized. When compared to analog signals, digital signals convey more information per unit of time.

a)Evelyn would most likely notice a difference between the two recordings after hearing them 100 times is that the analog signal's pitch and frequency change each time. It is continuous in the digital signal.

b)After 100 replays, the two recordings would sound different since the digital signal has a greater quality throughout long-distance transmission.

When digital signals are transferred, the amount of bandwidth used is lowered.

Hence, the digital signal has a greater quality throughout long-distance transmission causing two recordings would sound different.

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Answer:

410–460 g (14–16 oz) and is inflated to 65.7–68.8 kPa (9.5–10.0 psi).

Explanation: