i’ll literally venmo you if you answer this with FULL EXPLANATION so i can understand please !
Answers
Answer:
The speed with which the man flies after hitting the rock is 5.5 m/s
Explanation:
The given parameters are;
The mass of the man, m₁ = 100 kg
The mass of the scooter, m₂ = 10 kg
The initial speed of the man and the scooter, v₁ = 5 m/s
The speed with which the man flies after hitting the rock = v₂
The final speed of the scooter, v₃ = 0 m/s
The momentum = Mass × Velocity and by the principle of conservation of momentum, we have;
The total initial momentum = The total final momentum
The total initial momentum = (m₁ + m₂) × v₁ = (100 + 10) × 5 = 550
The total initial momentum = 550 kg·m/s
The total final momentum = m₁ × v₂ + m₂ × v₃, which gives;
The total final momentum = 100 × v₂ + 10 × 0
By conservation of momentum, the total initial momentum = The total final momentum, we get;
550 = 100 × v₂ + 10 × 0
∴ 550 = 100 × v₂
v₂ = 550 kg·m/s/(100 kg) = 5.5 m/s
The speed with which the man flies after hitting the rock = v₂ = 5.5 m/s
Related Questions
A roller coaster travels down a 120 m track in 12.5 seconds how fast does the roller coaster go
Answers
Answer:
9.6m/s
Explanation:
Using the equation S=d/t where s=speed, d=distance, and t=time
plug in the known variables
S=120m/12.5s
S=9.6m/s
The earth’s gravity is pulling on you. Are you pulling on the earth? Explain your reasoning.
Answers
Answer:
yes we do because every object that has mass produces gravitational force relative to how much mass it has
Explanation:
A double inclined plane that moves is a(n) .
Answers
Answer:
a wedge.
Explanation:
it moves when you apply force to one end of the wedge.
When one wave crest overlaps the crest of another and they add together what happens to the amplitude?
A: stays the same
B: decreases
C: increases
Answers
When one wave crest overlaps with the crest of another and they add together and their amplitude increases. Hence, C is correct.
What is amplitude ?Amplitude of a wave is the distance from the midpoint of a crest to its top or the distance from the midpoint of a trough to its bottom. For a wave the peak to the top is called crest and peak to the bottom or decline is called troughs.
When two waves overlap by crest of one wave and trough of another wave, then their amplitude will decrease and it is called destructive interference.
Amplitude of a wave is directly related to its intensity. High amplitude waves are intense. When two waves overlaps by their crests and add up together their amplitude will be the sum of amplitudes of both waves. This is called constructive interference. Hence, option C is correct.
To find more on interference, refer here:
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What does the REVOLUTION of Earth around the Sun bring us and how long does it take?
Answers
Answer:
takes 365 days and it bring us seasons such as, spring,winter and fall.
What is the difference between the geographic North Pole and the magnetic north pole?
Answers
Answer:
Magnetic north is the direction towards the north magnetic pole, which is a wandering point where the Earth's magnetic field goes vertically down into the planet
Explanation:
I searched it up lol
A 20 kg crate initially at rest on a horizontal floor requires a 80 N horizontal force to set it in motion. Find the coefficient of static friction between the crate and the floor.
Answers
Answer:
The coefficient of static friction between the crate and the floor is 0.41
Explanation:
Friction Force
When an object is moving and encounters friction in the air or rough surfaces, it loses acceleration and velocity because the friction force opposes motion.
The friction force when an object is moving on a horizontal surface is calculated by:
[tex]Fr=\mu N[/tex] [1]
Where [tex]\mu[/tex] is the coefficient of static or kinetics friction and N is the normal force.
If no forces other then the weight and the normal are acting upon the y-direction, then the weight and the normal are equal in magnitude:
N = W = m.g
The crate of m=20 Kg has a weight of:
W = 20*9.8
W = 196 N
The normal force is also N=196 N
We can find the coefficient of static friction by solving [1] for [tex]\mu[/tex]:
[tex]\displaystyle \mu=\frac{Fr}{N}[/tex]
The friction force is equal to the minimum force required to start moving the object on the floor, thus Fr=80 N and:
[tex]\displaystyle \mu=\frac{80}{196}[/tex]
[tex]\mu=0.41[/tex]
The coefficient of static friction between the crate and the floor is 0.41
A material has a low resistivity. Which statement is the best prediction about
this material?
A. It is a conductor that allows charge to move freely through it.
B. It is a conductor that does not allow charge to move freely through
it.
C. It it an insulator that does not allow charge to move freely through
D. It is an insulator that allows charge to move freely through it.
Please help fast
Answers
Answer:A
Explanation:I’m taking the test rn and I got it correct
It is a conductor that allows charge to move freely through it.
What is Resistivity?Resistivity is a distinctive attribute of any material that may be used to compare different materials based on how well they conduct electric currents. Low conductivity is indicated by high resistance.
The Greek letter rho is frequently used to represent resistance, which is numerically equivalent to the resistance R of a wire-like specimen, multiplied by its cross-sectional area A, and divided by its length.
The ohm is the measurement of resistance. The ratio of area in square meters to length in meters is reduced to merely meters in the metre-kilogram-second (mks) method.
Therefore, It is a conductor that allows charge to move freely through it.
To learn more about resistance, refer to the link:
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How much work is done in lifting a 300 Newton rock 10 meters off the ground?
Answers
Answer:
3000 JExplanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 300 × 10
We have the final answer as
3000 JHope this helps you
Ram travel 50metre on a straight road in 30second . hari covers the same distance on the same road in 45s . who has done more work ? who has more ? Explain in short
Answers
Answer:
The ram has done more work because the rate at which the ram work is 1.6m/s and Hari is 1.1m/s
You will measure and record the time it takes the cart to travel certain distances, and then complete some calculations. In the space below, write a scientific question that you will answer by doing this experiment.
Answers
Answer:
Take the measurement of the distance (d) with a meter rule (in meters) and also measure the time (t) of the travel in seconds with a stopwatch.
question: What is the speed of the cart?
Explanation:
The speed of an object in motion is the distance covered by the object with respect to time, that is, the ratio of distance covered to the time taken to reach that distance.
Speed = distance / time
= d (in meters m) / t (in seconds s) = m/s
Which type of friction opposes motion?
Answers
Answer:
Friction does not oppose motion, it oppose relative motion.
Explanation:
static friction opposes relative motion
Answer:
there are three types or friction
1) Static friction
2) Rolling Friction
3) Sliding friction
Static friction comes to end when the object starts moving(or starts motion ) so Sliding Friction and Rolling Friction opposes motion l.
is the text in red correct (0n0')
Answers
3. A dog walks a distance of 100 ft. in 20 s of time. What is the dog's
speed in feet per second?
O C 120 ft/s
O B80 ft/s
O D 2000 ft/s
O A 5 ft/s
Answers
100/20=5
Which of these is not a method of preventing the corrosion of metals?
A) galvanising
B) painting
C) plating
D) rusting
Answers
Answer:
D
Explanation:
rusting is actually the corrosion of metals so it can't be a way to prevent itself.
The force that acts on an object lying on a surface, acting in a direction perpendicular to the surface is called ____________
Answers
If it is on water thrust
How much force is needed to accelerate a 9,760 kg airplane at a rate of 4.4 m/s2?
Answers
Answer:
42,944
Explanation: 9,760 kg * 4.4 m/s2 = 42,944
Calculate the force used if 108J of work done is moving a wrapped present 9M
Answers
Answer:
F = 12 N
Explanation:
Mechanical Work
Mechanical work is the amount of energy transferred by a force. It's a scalar quantity, with SI units of joules.
Being F the force vector and s the displacement vector, the work is calculated as:
W = F.s
If both the force and displacement are parallel, then we can use the equivalent scalar formula:
W=F.s
When the value of the work is known and we need to find the force, we solve the above equation for F:
[tex]\displaystyle F=\frac{W}{s}[/tex]
The wrapping present is moved by s=9 m doing W=108 J of work. The force used is:
[tex]\displaystyle F=\frac{108}{9}[/tex]
F = 12 N
When a 0.292 kg mass on a string is swung at 8.45 m/s, it feels a centripetal acceleration of 78.9 m/s^2. What is the radius of the swing? (Unit = m)
Answers
Answer:
0.905
Explanation:
right answer
The radius of the swing is 0.905 m
Circular motionFrom the question, we are to determine the radius of the swing
Using the centripetal acceleration formula
[tex]a_{c}= \frac{v^{2} }{r}[/tex]
Where [tex]a_{c}[/tex] is the centripetal acceleration
v is the velocity
and r is the radius
From the given information,
v = 8.45 m/s
[tex]a_{c} = 78.9 \ m/s^{2}[/tex]
Then,
[tex]78.9 = \frac{8.45^{2} }{r}[/tex]
[tex]r = \frac{8.45^{2} }{78.9}[/tex]
[tex]r = \frac{71.4025}{78.9}[/tex]
r = 0.905 m
Hence, the radius of the swing is 0.905 m
Learn more on Circular motion here: https://brainly.com/question/25528860
A student pulls horizontally on a block with a spring scale. The block reads 24.5 Newtons before the block starts to move. It reads 23.7 Newtons as she pulls the block at a constant velocity. How should she explain this?
Answers
Answer:
The coefficient of friction causes the force on the object to be less than its initial reading on the spring scale.
Explanation:
Since the block reads 24.5 N before the block starts to move, this is its weight. Now, when the block starts to move at a constant velocity, it experiences a frictional force which is equal to the force with which the student pulls.
Now, since the velocity is constant so, there is no acceleration and thus, the net force is zero.
Let F = force applied and f = frictional force = μN = μW where μ = coefficient of friction and N = normal force. The normal force also equals the weight of the object W.
Now, since F - f = ma and a = 0 where a = acceleration and m = mass of block,
F - f = m(0) = 0
F - f = 0
F = f
Since the force applied equals the frictional force, we have that
F = μW and F = 23.7 N and W = 24.5 N
So, 23.7 N = μ(24.5 N)
μ = 23.7 N/24.5 N
μ = 0.97
Since μ = 0.97 < 1, the coefficient of friction causes the force on the object to be less than its initial reading on the spring scale.
A sheep is walking at 1.6 m/s. How long will it take to go 3600 m?
Answers
Answer:
2,250 seconds or 37.5 minutes
Explanation:
Convert 60000cm to m
Answers
Answer:
The answer is 600 using metric system
Answer:
600 cm
Explanation:
60,000 ÷100=600
A component that is used to break a circuit is
(1 Point)
Wire
Switch
Bulb
Electric cell
Answers
Guys i need help please
Answers
Answer:
I'm pretty sure the answer is around 9.2 seconds
Explanation:
The number of protons equals the atomic number. TRUE OR FALSE?
Answers
Answer:
true
Explanation:
The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.
What happens to the pressure as air rises from the ground into the atmosphere?
Does it increase or decrease?
Answers
Answer:
please try brainlist answer
As the atmosphere expands the further you get from the Earth's surface, it becomes less dense and air pressure decreases. As you increase altitude (distance from Earth's surface) in an airplane, air pressure changes
कृपया ब्रेनलिस्ट का उत्तर केवल 1more उत्तर देने का प्रयास करें।
Which is a feature of a cladogram?BY MOHAMED
I GIVEING A !)) 100 point RIGHT NOW ASP
Answers
Answer:
Constructed cladograms all typically share certain key features: Root – The initial ancestor common to all organisms within the cladogram (incoming line shows it originates from a larger clade) Nodes – Each node corresponds to a hypothetical common ancestor that speciated to give rise to two (or more) daughter taxa.
Explanation:
Answer:
one feature of a cladogram is a branch that shows you relations among animals
Explanation:
why we can not measure the total amount of heat energy that a body contains
Answers
Answer:
... As has been previously discussed, heat is not something that is contained in an object.
Explanation:
If you have a piece of brass and a piece of aluminurn that have the same volume, which will have a larger mass?
Answers
Answer:
the aluminum would have the most mass
For every action, there is an equal and opposite reaction” is a definition of _________
Answers
Answer:
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
Answer: action, opposite
Explanation: