Answer:
use first equation of motion v=u+at..v is 0..since we have to take him to rest and u is 13.5
Explanation:
u = 13.5 m/s
a = - 2.5 m/s^2
v = u + at
0 = 13.5 - 2.5 * t
t (time to reach a complete halt) = 5.4 sec
What makes human travel to the other planets in our solar system difficult?
Answer:
Taking water and oxygen from Earth is rather expensive and hard to do.
Explanation:
Without water and oxygen, travel to other planets is basically impossible
What conversion do you use to change 18 km to meters
Answer:
multiplication
Explanation:
multiply your distance of 18 kilometers by 1,000 to get 18,000 meters.
What are the 4 categories that makes the human body
Answer:
epithelial, muscle, nervous, and connective tissues.
Explanation:
The results of a dart game were precise but not accurate. The accepted value of the game was the center of the dartboard. Which correctly describes the results? All of the darts hit the center of the board. Some of the darts hit the center of the board. The darts hit the same general area of the board. The darts hit very different areas of the board.
Answer:
The darts hit very different areas of the board.
Explanation:
The bullseye is the point at which darts are most accurate. There is no accuracy nor precision if the darts are neither close to the target nor to one another.
What is dart precision?The degree of similarity between several measurements is known as precision.
Even if the measurements are not exactly the right value, they are very reproducible.
Throwing darts at a dartboard can be used to demonstrate accuracy and precision.
There is precision but not accuracy if every dart lands distant from the bulls-eye but extremely closely spaced apart.
In contrast to a dart that lands far from the bulls-eye, which shows poor accuracy, a dart that hits the bulls-eye is very accurate.
Therefore, The board was struck by the darts in a variety of ways.
Learn more about dart here:
https://brainly.com/question/14288013
#SPJ2
An open system starts with 52 J of mechanical energy. The energy changes
to 45 J of mechanical energy and 2 J of thermal energy. What is the final total
energy of the system?
A. 50 J
B. 54 J
C. 47 J
O D. 9 J
Answer:
ITS C 47
Explanation:
Sal is given a sample of an unknown liquid to test in the laboratory .sal thinks the liquid might be water .which of these physical properties
A it’s color
B. It’s mass
C it’s volume
D it’s density
1. The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car
that is merging onto the freeway is capable of accelerating at 2.25 m/s2. If the car
is currently traveling forward at 13.0 m/s, what is the shortest amount of time it
could take the vehicle to reach the speed limit? How far would the car travel in
this time?
Answer:
the speed limit 6 seconds and the car will travel in 90m
a car drives at 88 km/h over a distance of 22 kilometers calculate in minutes the time taken for the audi to travel this distance
V=88 km/h d=22km t=? if d/t=V t=d/V t=22km/88km/h
t=0,25h
t=1500min
i hope this helps
your uncle danny just moved into a new apartment and wants to make his famous spaghetti sauce for his new neighbors
Answer:
he invs them
Explanation:
its common sense
Answer:
He invs them.
Explanation:
Find the velocity of a ball traveling 5 meters for 20 seconds.
Formula:
Substitute:
Solution:
Answer:
The answer is
0.25 m/sExplanation:
The velocity of w given body given the distance and time taken can be found by using the formula
[tex]velocity = \frac{distance}{time} \\ [/tex]
From the question
distance = 5 m
time = 20 s
The velocity of the ball is
[tex]velocity = \frac{5}{20} = \frac{1}{4} \\ [/tex]
We have the final answer as
0.25 m/sHope this helps you
Formula: v = d/t
v = velocity
d = distance
t = time
We are given the distance (5 meters) and the time (20 seconds). Solve with these given values.
v = 5/20
v = 1/4 m/s
Best of Luck!
In addition to the idea that Jupiter has moons orbiting it, what other evidence did Galileo use to support Copernicus’s model and disprove Aristotle and Ptolemy?
Answer:
Venus has phases similar to the moon’s phases.
Explanation:
i hope this helped you :)
A rope is used to pull a 4.0 kg bucket of water upwards out of a deep well with an applied force 45 N. If starting from rest, what speed will the bucket have after experiencing this force for 2 seconds?
Answer:
v = 22.5 m/s
Explanation:
The speed of the bucket can be found using the following equation:
[tex] V_{f} = V_{0} + at [/tex]
Where:
[tex]V_{f}[/tex]: is the final speed =?
[tex]V_{0}[/tex]: is the initial speed = 0 (starts from rest)
a: is the acceleration
t: is the time = 2 s
We need to find the acceleration, it can be found as follows:
[tex] F = ma [/tex]
Where:
F: is the force = 45 N
m: is the mass = 4.0 kg
[tex] a = \frac{F}{m} = \frac{45 N}{4.0 kg} = 11.25 m/s^{2} [/tex]
Now, the speed is:
[tex] V_{f} = V_{0} + at = 11.25 m/s^{2}*2 s = 22.5 m/s [/tex]
Therefore, the speed that the bucket will have is 22.5 m/s.
I hope it helps you!
Sal sprints 40 m to the right in 5.5s.
What was his average velocity in m/s?
Answer:
7.27 m/s
Explanation:
You would be dividing 40 (distance) by 5.5 (time) to get the average velocity of 7.27 m/s .
Answer:
7.27
Explanation:
40/5.5=7.27
The fastest helicopter, the Westland Lynx, can travel 3.33 km in the forward direction in just 30.0 s. What is the average velocity of this helicopter? Express your answer in both m/s and km/hr.
Answer:
The value in m/s [tex]v_{a} = 111 \ m/s [/tex]
The value in km/h [tex]v_{a} = 400\ km/h [/tex]
Explanation:
Generally the average velocity of the helicopter is mathematically represented as
[tex]v_{a} = \frac{\Delta D}{ t}[/tex]
substituting [tex]3.33 km = 33.3*10^3\ for\ \Delta D[/tex] and 30.0 s for t
We have
[tex]v_{a} = \frac{33.3 *10^{3}}{ 30}[/tex]
=> [tex]v_{a} = 111 \ m/s [/tex]
Now converting to km/h
[tex]v_{a} = 111 * \frac{3600 *\frac{s}{h} }{1*10^{-3} *\frac{km}{m}} [/tex]
=> [tex]v_{a} = 400\ km/h [/tex]
What’s the definition of friction
Answer:
Friction is a force that rubs on a object which then causes something within that object to happen. There are many types of friction, though.
Explanation:
brainliest? :{
What is the meaning of the universe?
Answer:
Explanation:
All existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
How’d the turtle cross the road
Answer:
He crawled.
Explanation: He crawled with the strength he gained from a leaf.
He did it by doing it.....
Why is a pendulum hanging off another pendulum called a chaotic system?
Explanation:
If transformations from stabilization are minimal, a double pendulum performs basic geometric motion. The highly nonlinear system, furthermore, becomes radically unstable in its motion as significant displacements are introduced, showing that deterministic processes are not inherently predictable
(USE THE GRAPH) Vectors B and C and are shown in the graph. Vector B is multiplied by the scalar 92. What angle does the new vector make with the x-axis?
Answer:
The angle the new vector makes with the x-axis is 33°
Explanation:
By multiplying a vector with a scalar, we multiply the similar components of the two quantities which is the magnitude of the scalar quantity and the magnitude of the vector with the new vector formed will have a magnitude equal to the product of the two magnitudes and the same direction of the original vector as follows;
The magnitude of the vector B = 5.6
The magnitude of the scalar = 92
The product of the two magnitudes = 5.6 × 92 = 515.2
The magnitude of the new vector = 515.2
The direction of the new vector = 33° South of West
Therefore, the angle the new vector makes with the x-axis = 33°.
I will literally Venmo u a dollar If I can solve this lol haahha
Answer: Answer is D
if the coefficient of friction is root 3 the angle of friction is
Explanation:
The coefficient of friction = tanθ,
the angle would be 30∘
Answer:
Tan¯¹ /3=60 degree
Explanation:
you know coefficient is friction is equal to tan 0 equal to square root of 3 is equal to tan of civil 20 skills equal to 60 degree
A blue circle labeled proton and A overlaps a pink circle labeled neutron and C. The overlap is labeled B.
The Venn diagram compares protons with neutrons. Which shared property belongs in the region marked "B"?
Is negatively charged
Has mass of 1 amu
Orbits the nucleus
Is positively charged
Answer:
has mass of one amu
Explanation:
i got it right
Answer:
The answer is B.) Has mass of 1 amu
Explanation:
Neutrons have no charge so its not A or D and electrons are the things that orbit the nucleus so it not c.
what is the meaning of joule
A joule is a unit of energy.
Answer:
The work done by a force of one Newton is known as joule
Explanation:
hey can anyone help me out in dis
Answer:
A) moving randomly
B) collide into each other
D) high kinetic energy
Explanation:
Gas particles move very fast (high kinetic energy) and in unpredictable directions (moving randomly). They also collide into each other.
I hope this helps! If it does, a Thanks or brainliest would be much appreciated :)
Please answer the questions here in the attachment I attached below. They are all multiple choice.
Answer:
abcbc
Explanation:
Write about natural indicators.
a charge of 12 passes through the filament of a car head lamp bulb in 4 s. what is current?
Answer:
3 A
Explanation:
[tex]current = \frac{charge}{time} \\ = \frac{12}{4} \\ = 3 \: amperes[/tex]
An object is projected with initial speed v0 from the edge of the roof of a building that has height H. The initial velocity of the object makes an angle α0 with the horizontal. Neglect air resistance. If α0 is 90∘, so that the object is thrown straight up (but misses the roof on the way down), what is the speed v of the object just before it strikes the ground?
Answer:
Explanation:
Initial velocity u = V₀ in upward direction so it will be negative
u = - V₀
Displacement s = H . It is downwards so it will be positive
Acceleration = g ( positive as it is also downwards )
Using the formula
v² = u² + 2 g s
v² = (- V₀ )² + 2 g H
= V₀² + 2 g H .
v = √ ( V₀² + 2 g H )
Which option lists a form of potential energy followed by a form of kinetic energy?
A. Sound energy | nuclear energy
B. Magnetic energy electromagnetic energy
C. Gravitational energy | elastic energy
D. Electromagnetic energy | electrical energy
Answer:
Magnetic energy and electromagnetic energy form of potential energy followed by a form of kinetic energy.
(B) is correct option.
Explanation:
Given that,
Lists a form of potential energy followed by a form of kinetic energy
We know that,
Sound energy :
The movement of energy through object it is called sound energy. When a object produced vibration by force then it moves in wave.
Sound wave is example of kinetic energy.
Nuclear energy :
The store energy in the nucleus of the atom it is called nuclear energy. This energy released when occurs fusion and fission.
Nuclear energy is the example of potential energy
Magnetic energy :
Magnetic energy is a type of potential energy which is depend on distance and position in the magnetic field.
Electromagnetic energy :
Electromagnetic energy is light energy. it is type of kinetic energy.
Gravitational energy :
Gravitational energy is a type of potential energy. It is an energy related with gravity or gravitational force.
Elastic energy :
The store energy in elastic object it is called elastic energy. This energy is a type of potential energy.
Electrical energy :
The movement of electrons is called electrical energy. When electrons move through a wire then it is are called electricity. Electrical energy is type of kinetic energy.
Hence, Magnetic energy and electromagnetic energy form of potential energy followed by a form of kinetic energy.
(B) is correct option.
Answer:
its B
Explanation:
why do we classify living organisms
Answer:
The science of classifying living things is called taxonomy. Scientists classify living things in order to organize and make sense of the incredible diversity of life. Modern scientists base their classifications mainly on molecular similarities. They group together organisms that have similar proteins and DNA.
Explanation:
The science of classifying living things is called taxonomy.