Students are given the following information about a 2.0 kg, motorized toy boat on water. what net force is exerted on the boat from 4S to 8S?
Answers
The motorized toy boat experiences a net force of 0 N between 4 s and 8 s.
The motorized toy boat moves at 8 m/s (u) at 4 s and at 8 m/s (v) at 8 s. We can calculate the acceleration (a) in that period using the following kinematic expression.
[tex]a = \frac{v-u}{\Delta t} = \frac{8m/s-8m/s}{8s-4s} = 0 m/s^{2}[/tex]
The object with a mass (m) of 2.0 kg experiences an acceleration of 0 m/s². We can calculate the net force (F) in that period using Newton's second law of motion.
[tex]F = m \times a = 2.0 kg \times 0 m/s^{2} = 0 N[/tex]
The motorized toy boat experiences a net force of 0 N between 4 s and 8 s.
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Related Questions
What is equilibrium?
Answers
Answer: Equilibrium is the state in which market supply and demand balance each other, and as a result prices become stable. The balancing effect of supply and demand results in a state of equilibrium.
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Describe all the ways that Newton’s Laws can apply in the game of football?
Answers
Answer:
Newton's Second Law of Motion states that a force on an object is equal to the mass of the object multiplied by its acceleration (F=ma). ... When the punter kicks the ball, his foot exerts a force on the ball. The football then exerts an equal amount of force in the opposite direction on the kicker's foot.
In football, the foot of a kicker applies force to the ball when he kicks it, as the force acting on a ball is equal to that ball's mass times its acceleration, so Newton's second law is applied here.
What is Newton's Second Law?The precise explanation of how a force can change a body's motion is given by Newton's second law. A body's momentum is said to vary at a rate equal to the force acting on it over time, both in magnitude and direction. A body's momentum is determined by its mass and velocity together.
According to Newton's Second Law of Motion, a force acting on an object is equal to that object's mass times its acceleration (F=ma). The punter's foot applies force to the ball when he kicks it. The kicker's foot is then subjected to an equivalent force from the football acting in the opposite direction.
Therefore, In football, the foot applies force to the ball when he kicks it, so Newton's second law is applied here.
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answer pls!!
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Answers
Explanation:
q= n e
6 × 10^-11 = n (1.6 × 10^-19)
n = 6×10^-11 / 1.6 × 10^-19
n= 3.75 × 10⁸ electrons
in longitudinal waves in a spring, the parts where the coils are close together are called
Answers
Answer:
compression
Explanation:
compression
A student walks a distance of 3 km in 20 minutes calculate his average speed
Answers
Answer:
His average speed is 0.15 kilometer per minute or 2.5 meters per second.
Explanation:
average speed = distance/time
x = 3 km/20 minutes
x = 0.15
—
x = 3000 m/1200 s
x = 2.5
If a student walks a distance of 3 km in 20 minutes then the average speed of the student would be 9 kilometers per hour.
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.
As given in the problem we have to calculate the average speed of the student if a student walks a distance of 3 km in 20 minutes.
The distance traveled in 20 min = 3 kilometers
The distance traveled in 60 min = 3 × 3
= 9 kilometers
Thus, If a student walks a distance of 3 km in 20 minutes then the average speed of the student would be 9 kilometers per hour.
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Explain the Kinetic Theory of Matter
and use an example from everyday life
Answers
Answer:
The Kinetic Theory of Matter or KTM as i will call it, states that every object is made of many many small particles (humans are made of sextillions of atoms), and that they are constantly moving and bumping each other. The degree to which the particles move is determined by the amount of energy they have and their relationship to other particles.
An example would be Brownian Motion- the random movement of dust particles because of collisions with "air" molecules and how gases behave i.e. Boyle's, Charles', and Gay-Lussac's Laws.
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Activity 6: Write the uses of each cleaning compound.
1. Detergent-
2. Solvent cleaners-
3. Avid cleaners-
4. Abrasives-
Answers
Cleaning solvents are used to remove oil, grease, solder flux, and other contaminants.
Acid cleaners are generally used to remove mineral deposits and are useful for descaling dishwashers or removing rust from restroom facilities.
Abrasive uses
* Buffing.
* Honing.
* Drilling.
* Grinding.
* Sanding.
* Polishing.
* Cutting.
* Sharpening.
Like surface water and groundwater, glaciers shape the land through erosion and deposition. Fill in the blanks to complete each statement about glaciers.
Glaciers cause erosion by abrasion and
.
The sediment deposited by glaciers is called
.
When a chunk of ice left behind by a receding glacier melts, the water stays in the kettle, forming a
.
PLEASE HELP
Answers
Answer :Glaciers cause erosion by abrasion and
plucking
. The sediment deposited by glaciers is called till.
When a chunk of ice left behind by a receding glacier melts, the water stays in the kettle, forming a kettle lake.
Explanation:
I took the test
A) Glacier causes erosion by abrasion and plucking.
B) The sediment deposited by glaciers is called a moraine.
C) When a chunk of ice remained behind by a receding glacier melts, the water stays in the kettle, forming a kettle lake.
What are abrasion, plucking, and moraine?Abrasion contains the wear, polishing, and scratching produced in the bedrock by the thicker rock fragments brought by the ice, and in that way, grooves are formed.
Plucking generally takes place when advancing ice will push against fractured bedrock. Additional breaks can produce stress, while warmer temperatures and friction from glacier movement can bring the melting.
Moraine is the deposit of trawls of material fragmented by glaciers, which create mountain ranges because of their accumulation.
Glaciers are contacted by ice deposits due to continental glaciation. These forms develop with the glacier outwash and leave ice deposits. It generates a kettle lake when a large chunk of ice left a depression in the glacial drift when the ice melts a kettle-like hole is formed.
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A box is being pushed at constant speed up an inclined
Answers
Answer:
ok what is the question
Explanation:
I don't know what the question is
which type of wave has rarefactions and compressions
Answers
fraction that occurs in gases and liquids is called what
plzz help meeeee
Answers
Answer:
it is called fluid friction.
Answer this question i will mark you brainliest
Answers
Answer:
all of the above OR LETTER B
Explanation:
THAT'S WHAT I KNOW:))
Answer:
la c)
Explanation:
in figure Car’s weight = 16,000 N. What is the external input force?
Answers
The answer is 200 Newton
Answer:
The answer is 200 Newtok
Calculate the pressure increase at the bottom of a pool of depth 2m. Density of water=1000kg/m^3 g=10N/kg
Answers
D = density of water (given as 1000 kg/m^3)
h = depth of water = 3m
g = acceleration of gravity = 9.8 m/s^2
At a depth of h (meters), the static pressure is
P(h) = Pa + Dgh
Plug in the numbers and get P(h) in units of N/m^2.
Which 2 points are unbalanced??
Answers
Answer: section 2 and 4
Explanation:
I had this problem before and that was the answer.
Select all that apply.
The spectrum of Star S is compared to a reference hydrogen spectrum. What can be concluded about Star S?
Star S is moving away from Earth.
Star S is moving toward Earth.
Star S has transverse motion.
Star S has radial motion.
Answers
Answer:
Star S has radial motion
Explanation:
Because the radial motion stracture is kinda similar to hydrogen spectrum(I'm guessing,only lol)
The spectrum of Star S is compared to a reference hydrogen spectrum. It is concluded that Star S has transverse motion.
What is hydrogen spectrum?Hydrogen spectrum is used to show the quantized electronic structure of an atom.
If Star S is not showing radial motion. So, it is not moving away or towards the Earth.
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What is the mass of a skier if they are applying a force of 500N and they are accelerating at 20m/s2?
Answers
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
We know that,
[tex]force = mass \times acceleration[/tex][tex]500 = m \times 20[/tex][tex]m = \dfrac{500}{20} [/tex][tex]m = 25[/tex]Mass of skier is 25 kg
A possible answer to a scientific problem is called a
Answers
Answer:
A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis must be testable and measurable.
Explanation:
Answer:
hypothesis is likely tobe the answer, im indian
Sound wave is an example of ……………………………………. wave.
1.Energy
2.Medium
3.Transverse
4.Longitudinal
Answers
Answer:
4
Explanation:
longitudinal
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How much work is done by a man if he moves a distance of 15m by applying the force of 20N? Find his power if he does the work in 2 seconds. (answer - 300 joule,150w)
Answers
Work= Distance × Force
15 metre × 20 N
300 Joule
Now ,
Power,
2 seconds = 300/2
150 watt
We know that
Unit of Work is Joule
Unit of Power is watt
So,
Work - 300 joule
Power= 150 watt
how many orbitals are in the 5th principal energy level
Answers
Answer:
25
Explanation:
(1 + 3 + 5 + 7 + 9) orbitals = 25 orbitals
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if u know physics pls answer the rest of my question!!
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Answers
a] negative charge it's e-
A cup of tea with a temp. of 80°C is put on a table in a 20°C room. What happens to thermal energy and molecular motion of the tea when it is left on the table? *
Answers
Answer:
The thermal energy increases and the molecules move faster.
Encontrar la distancia y desplazamiento de las dos trayectorias si se mueve el móvil Desde A hasta B
Answers
Answer:
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Explanation:
The air is 80% Nitrogen, in what form do organisms use nitrogen?
Answers
Answer:
Nitrogen in the air
Explanation:
The Earth's atmosphere contains almost 80 % nitrogen gas. It cannot be used in this form by most living organisms until it has been fixed, that is reduced (combined with hydrogen), to ammonia.
to
How does the connection between electricity and magnetism allow you to make
a motor out of a coil and a magnet? How do induced currents allow you
make a generator out of a coil and a magnet?
Answers
Quinn accelerates her skateboard along a straight path from 0 m/s to 4.0 m/s
in 2.5 seconds. Calculate the acceleration of the skateboard
Answers
[tex]\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{4-0}{2.5}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{4}{2.5}[/tex]
[tex]\\ \sf\longmapsto Acceleration=1.6m/s^2[/tex]
What is it about a black hole that makes it powerful?
Answers
Answer:
A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes.Explanation:
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What is the physical dimension for moment
Answers
what piece of equipment on a boat is most important in preventing propeller
Answers
The ignition safety switch, often known as the engine cut-off switch, is the most critical piece of equipment for preventing propeller strike injuries. The purpose of this device is to turn off the boat engine immediately so the propeller will be halted and an accident can be avoided.