3. A block is pushed with 30N of force this changes the velocity from 20m/s to
30m/s, after 2 seconds. What is the mass?

Answers

Answer 1

let's find the acceleration first :

[tex] \boxed{a = \frac{v - u}{t} }[/tex]

[tex]a = \dfrac{30 - 20}{2} [/tex]

[tex]a = \dfrac{10}{2} [/tex]

[tex]a = 5 \: \: ms {}^{ - 2} [/tex]

now, we know that :

[tex]f orce= mass \times acceleration[/tex]

[tex]30 = m \times 5[/tex]

[tex]m = \dfrac{30}{5} [/tex]

[tex]m = 6 \: \: kg[/tex]

hence, mass = 6kg


Related Questions

Why aren't pads or helmets necessary in flag football?​

Answers

Answer:

because it is not nesscery

Explanation:

Un resorte experimenta un alargamiento de 7cm al soportar un peso en uno de sus extremos. Si suconstante tiene un valor de 835 N/m, ¿Cuál es el valor de la fuerza de restauración?

Answers

Answer:

ألا تعلم أنني أذكى منك؟

Explanation:

لذا لا تجرؤ على سؤالي هكذا؟

the apparent backward motion of a planet along the celestial sphere is called:

Answers

Answer:

retrograde

Explanation:

here's a pic of a slug

What is dark matter Pls explain!​

Answers

Answer:

Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe. ... Most dark matter is thought to be non-baryonic in nature; it may be composed of some as-yet undiscovered subatomic particles.

A car drove 6 km east, turned 90° to the north, and drove 8 more km. What is the cars
displacement from where they began?

Answers

Answer:

14 km away and a turn of 90°

Explanation:

brailiest pls pls pls

which biome has the most variable year round temperature

Answers

That should be the Grasslands ?

Why is air pressure lower on top of the airplane wing?

Answers

Answer:

Explanation:

Airplane wings are shaped to make air move faster over the top of the wing. When air moves faster, the pressure of the air decreases. So the pressure on the top of the wing is less than the pressure on the bottom of the wing.

this is off the internet

hope this help:)

explain the energy transformation processes in an electromagnet

Answers

Answer:

Explanation:

It transfers from mechanical energy, to electrical energy to chemical energy. The energy transformation in an electromagnet is from chemical to electrical to electromagnetic waves. The north poles of two different magnets will attract each other.

a car was traveling at 30.0 m/s when a small child darted onto the road 60.0 m away. Reacting instantly the driver slams the brakes. a) How much time would it take to stop if it was able to stop in exactly 60.0 m?

Answers

2 seconds,,,,,,,,,,,,,,,,,,,,,,,

why do solar eclipses happen only during a new moon?

Answers

Answer:

For a solar eclipse to occur the moon must be between the earth and the sun (the light of the sun is blocked)'

By definition this is a new moon (which occurs when the moon cannot be seen because it is located between the sun and the earth).

how do the coils impact the strength of the magnetic fieldhow do the coils impact the strength of the magnetic field

Answers

A wire coil is an electrical conductor with one or more turns designed to produce a magnetic field. This is commonly used to increase the strength of a magnetic field. The more turns of wire on the coil, the stronger the magnetic field will be.

Which elements belong to the family known as noble gases?

Answers

Answer:

Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn)

Explanation:

hope this helps

which type of thermal energy trnasfer dose a foil wrapping reduce the most

Answers

Answer:

Conduction

Explanation:

Hope this helps :)

pls make brainliest :p

Where on the physical activity pyramid do lifestyle activities belong?

Answers

Answer:

The physical activity pyramid helps in organizing the person's daily life routine. It separated the exercises into different levels and helps the person to inherit a fit and healthy life style.

imagine your self as a basketball player.​

Answers

Answer:

yap

Explanation:

so easy

thanks for free

If I imagine to be a basketball player than I fell too proud on myself...

which force is responsible for electric gong ?

Answers

MAGNETIC FORCE...

Have a beautiful and joyful day ahead.

Answer:

Magnetic force

Explanation:

have a nice day

my friend and me are struggling help ussss

Answers

Explanation:

according to my sensation : its distance traveled is 24km and time is 6 days.

therefore, the speed is = 24km/6day = 4km/day.( first option)

hope this helps you.

explain hydraulic car jack with diagram​

Answers

Answer:

what diagram

Explanation:


Clyde takes a flight from Bellingham to Seattle, which is a distance of 90-miles,
at a constant speed of 180-mi/hr. He then rents a car and drives to a friend's house in Mt.
Vernon at 60-mi/hr. Mt Vernon is 30-miles from Bellingham.
What is trip distance?

Answers

It would be 90 distance of mile because 60 plus 30 miles is 80 miles distances

NEED HELP!!!!!!
Which is the BEST description of the role of glucose in the body?

OPTIONS:
A.
It moderates the heartbeat.
B.
It is food converted into fuel.
C.
It regulates body temperature.
D.
It eliminates sugar from the body.

PLEASE NO LINKS

Answers

The answer is B because of photosynthesis and cellular respiration

So for photosynthesis the plant needs

Water Oxygen Corbin dioxide to live and produces glucose/sugar and oxygen

For cellular respiration you as a human need
Oxygen and glucose and produce Corbin dioxide and ATP which is a fancy word for energy

The best description of the role of glucose in the body is that it is the food converted into fuel. Details about role of glucose can be found below.

What is cellular respiration?

Cellular respiration is the process by which living organisms obtain energy for their daily activities by breaking down food molecules in their cells.

The food ingested by living organisms is digested into the simplest form called glucose. The glucose is then broken down during cellular respiration.

During cellular respiration, glucose is broken down to produce energy (ATP), which is the fuel for metabolic activities in the body.

Learn more about cellular respiration at: https://brainly.com/question/13721588

for an object to be in static equilibrium, the net force must be equal to zero and

Answers

Answer:

The normal force must equal the weight.

Explanation:

Hope this helps..

what is the meaning of vitality​

Answers

the state of being strong and active; energy
The power giving continuance of life, present in all living things

Question 1(Multiple Choice Worth 2 points)
(02.07 MC)
Which of the following steps is required after biological processes have broken down organic material in wastewater?
A- Bar screening
B- Grit screening
C- Primary clarifiers
D- Disinfection

Answers

Answer:

The answer is c

Explanation:

i had the same question and you have to believe me and if you don't that will be on you

NEED HELP!!!!

When people are sick, it is often recommended that they consume a lot of liquids, particularly water. What is the biological basis of this advice?

OPTIONS:
A.
Water will help flush toxins out of the body.
B.
Drinking will distract them from their illness.
C.
It is always easier to drink than to eat if you are sick.
D.
They are probably sick because they were dehydrated.

PLEASE NO LINKS

Answers

Answer:

A.

Explanation:

Drinking water usually helps with gaining hydration cause usually when you get sick you get weak. thats what u think though

Water will help expel toxins from the body that's why it is recommended to sick people to consume more water. Therefore, option (A) is correct.

Why is it important to stay hydrated during sick?

Proper hydration can be helpful to the skin and mucous cell membranes play a barrier to stop bacteria from entering the body when sick with a virus. Fluid can also help decrease irritation when sneezing, coughing, and even breathing.

Water can help to regulate body temperature, maintain healthy skin and joints, digest food, and help the brain function at its best. Producing requires bodily fluids, like tears and saliva, and removing waste through sweat, and urination.

Dehydration can happen when we lose a high amount of bodily fluids than we’re consuming. This can occur through bodily functions that bring the loss of fluids and electrolytes.

Therefore, it is important to stay hydrated when you are sick.

Learn more about body dehydration, here:

https://brainly.com/question/24342046

#SPJ2

A ball is throw vertically upwards with a speed of 20ms,calculate the maximum height reach(g=10)

Answers

Please check the attached picture

Another name for the arrows in a free-body diagram is calling it a

Answers

Answer:

the free body diagram models the forces acting on an object. The object or 'body' is usually shown as a box or a dot. The forces are shown as thin arrows pointing away from the centre of the box or dot. ... It is important to label each arrow to show the magnitude of the force it represents.

Think about the reasons behind the cost of the Birkin bag and explain why it costs $60,000 in your own words. Do you think that this is a good marketing strategy? Why? Can you think of any other products (clothes / elctronics / anything) that use the same strategy? Does it work?

Answers

Answer:

In terms of both price and availability, the Birkin bag is as elusive as it is exclusive. For more than two decades, the bag has been the most sought item in the handbag industry. For such a modest bag, that's a lot of staying power (in looks alone, the design itself takes some 18 hours and is done by a single craftsman).

Of course, it's likely that the bag's rarity is what keeps it at the top of every want list. It is difficult, for example, to stroll into a Hermès store and buy a bag –– even if you could afford to pay the minimum price of $10,000. No, you have to be on an elite list to receive a Birkin.

Explanation:

There are alot more things like the Birkin Bag that use the same marketing skills and it works for alot of companies.

Convert milligram to 1 gram

Answers

Answer:

convert 1 milligram to 1 gram:

Explanation:

1 milligram is 0.001 gram.

so... 2 milligram is 0.002

3 milligrams is 0.003

and so on.

A box of Thanksgiving presents slides across a waxy floor at 20m/s. It comes to a stop in 4 seconds. What distance did the box travel across the floor?

Answers

Answer:

V = d/t = 20

20=d/4 so d = 80

ocean acidification impacts corals in what major way?

Answers

Many marine species, including coral, need calcium carbonate to build their protective shells and exoskeletons. Without it, shells grow slowly and become weak. Therefore, ocean acidification impacts Coral reefs with breakable, slow-growing corals erode more quickly than they accrete.
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