Answers
Answer:
B
Explanation:
Related Questions
the force on a dropped apple hitting the ground depends upon
Answers
Answer:
F=ma
Explanation:
Force = mass * acceleration
What is Newton's first law of motion?
A. For every force there is an equal and opposite reaction force.
B. If a net force is applied to an object, then the object will accelerate.
C. An object will remain at rest or continue moving in a straight line with a constant speed unless acted on by an unbalanced force.
D. The gravitational force between two objects is proportional to their masses and inversely proportional to the distance between them.
Answers
Answer:
C
Explanation:
Newton's first Law of Motion is also known as law of inertia, which states that "an object at rest remains at rest, and an object that is moving will continue to move straight and with constant velocity, if and only if there is no net force acting on that object". As such, the correct option should be C.
Option A is Newton's third Law of Motion.
Option B is Newton's second Law of Motion
Option D is Newton's Law of Universal Gravity
an apple has a mass of 2kg. it is 3 m above ground. What is its potential energy?
Answers
Answer:
PE = 58.8J
Explanation:
potential energy = mgh
mass = 2kg
g = 9.8m/s^2
h = 3m
What conclusion does the student most likely make based on this data?
Answers
Answer:
O Tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.
Explanation:
In the data the student collected, it showed that when the atmosphere is thicker, it slows down the light. With sound however, the sound travels better in thicker stmosphere or solid, than thin air, or steam.
-kiniwih426
A bus slows down uniformly from 71.2 km/h
to ( km/h in 22.3 s.
How far does it travel before stopping?
Answer in units of m.
Answers
Answer:
1 km = 1,000 meters
Explanation:hey im in 7th grade and even i know that.i sorry but you seem not the smartest.jk thats a good question
will an object have the same weight on moon as it does ?
Answers
Answer:
The mass of an object is the same everywhere either on earth or moon.
The weight of an object depends on a gravitational acceleration and it's different from one on earth and that on moon.
therefore the weight changes but the mass is the same.
Explanation:
Hope this helps
find an expression for the magnitude of the horizontal force f in the figure for which m1 does not slip either up or down along the wedge. all surfaces are frictionless.
Answers
We have that the expression for the magnitude of the horizontal force F is
[tex]F=(m_1+m_2)gtan\phi[/tex]
From the question we are told
find an expression for the magnitude of the horizontal force f in the figure for which m1 does not slip either up or down along the wedge. all surfaces are friction-less.
Generally the equation for Normal force is mathematically given as
[tex]N=\frac{n_2g}{cos\pji}[/tex]
Where
a signifies acceleration
[tex]Nsin\phi=m_2a[/tex]
Therefore
Equating above equations
[tex]a=\frac{Nsin\phi}{m^2}\\\\a=gtan\ph[/tex]i
Generally the equation for Force on wedge is mathematically given as
[tex]F=m_1a+Nsin\phi[/tex]
[tex]F=(m_1+m_2)gtan\phi[/tex]
Therefore
The expression for the magnitude of the horizontal force F is
[tex]F=(m_1+m_2)gtan\phi[/tex]
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An unknown element shiny in color, malleable, conducts electricity, and is in group 2 on the periodic table is a non-metal.
True
False
Answers
7. A gold bar has a volume of 4.7 cm3 and a density of 19.3 g/cm3. What is its mass? Be sure to show your work and label all units
Answers
Answer:
90.71
Explanation: Just multiply V/D=Mass
How much energy does your soda lose if 25.0g of water condenses on the outside of the can?
Answers
The mass given is 25.0 grams. As for the change in temperature, I will assume that it start off at room temperature, 25°C.
An elevator accelerates upward at 1.2 m/s 2 . the acceleration of gravity is 9.8 m/s 2 . what is the upward force exerted by the floor of the elevator on a(n) 62 kg passenger? answer in units of n.
Answers
Answer:
Explanation:
Fr= Fn-P
ma=Fn-mg
Fn= m(a+g)
Fn=62(1.2+9.8)
Fn= 682N
NEED HELP!!!!!!! 13 POINTS!!!!
Alana wants to add some eccentric exercise to her routine. She has heard that pull ups are good, but she does not have a lot of upper body strength and thinks that is going to be too challenging. She wonders if she can start by just hanging on at the top with her chin above the bar and holding that pose to get the benefits. What is the BEST response to Alana?
A.
Any activity that works the arms is eccentric exercise.
B.
That might build strength, but it is not eccentric exercise.
C.
She will get all of the benefits because grasping the bar key.
D.
She needs to do something else as pull-ups are not eccentric exercise.
Answers
Answer:
the answer should be B
Explanation:
i got it right on edmentum
Can anyone Hele please I don't know how to convert the light years in order to get an equation like the one on Alpha Centauri in the picture, but I do know how to log it.
Answers
Answer:
Log 10 ( 4.16x10^16)
Explanation:
Other distance from sun you have to search by your self then apply the equation Log 10 ( distance from sun )
marissas car accelerates uniformly at a rate of -2.60m/s^2. how long does it take for marissas car to accelerate from a velocity of -28.2m/s to -42.3m/s?
Answers
Answer:
1.02s
Explanation:
In this situation the following equation will be useful:

Where:
 is Marissa's car final velocity
 is Marissa's car initial velocity
 is Marissa's car constant acceleration (assuming this is the acceleration, since 1269 m/s^{2} does not make sense)
 is the time it takes to accelerato from  to 
please help me i’m stuck on this question
Answers
Pedro runs a total of 125 m in a straight line north in 11.5 s. What is his velocity.
Answers
velocity = 125 / 11.5
velocity = 10.9m/s (3sf)
Which statement about a Ferris wheel is true?
a The input force is applied to the axle.
b The input force is less than the output force.
с The output distance is shorter than the input
distance.
Answers
Answer:the imput force is applied to the axle
Explanation:
How many protons are in the nucleus of an aluminum atom?
Answers
Explanation:
13 protons are in the nucleus of an aluminum atom
what falling object inspired newton to think about gravity
Answers
Legend has it that a young Isaac Newton was sitting under an apple tree when he was bonked on the head by a falling piece of fruit, a 17th-century “aha moment” that prompted him to suddenly come up with his law of gravity.
what is the modern symbol for the element Bo
Answers
Answer:
Bo (modern symbol B) = Boron
Explanation:
Hope this helps
The force between two point-charges of 0.040 C and 0.060 C separated by certain distance is 2.2 x 10^5 N. what is the distance between the charges?
A. 2.5m
B. 5m
C. 10m
D. 20m
Answers
Answer:
im in hardvard dont cheat and get good grades and become a graduate
it is c
Explanation:
Answer:
10m
Explanation:
Oh a sqiurrel’s hidden nuts, for every 5 that get found, there are 3 that to not get found. A squirrel hid 40 nuts all together. How many of the nuts do not get found?
Answers
Answer:
66 2/3
Explanation:
A rubber duck sat is floating on the surface
on the water. 10N of weight is acting
DOWNWARDS on the water. What other
force must be acting to allow the duck to
float?
Answers
The other force that must be acting on the duck is upthrust of 10 N.
The given parameters;
weight of the rubber duck, W = 10 NWhen the weight of the object is equal to the upthrust, the apparent weight will be zero and the object will float in the liquid. This is known as principle of floatation.
Since the given weight of the rubber duck is 10 N, then the upthrust on the duck will be 10 N to enable the duck float on the water.
Thus, the other force acting on the duck is upthrust of 10 N.
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An object is traveling at a constant velocity of 8 m/s when it experiences a constant acceleration of 3.5 m/s2 for a time of 40 s. What will its velocity be after that acceleration?
Answers
Answer:566.3
Explanation:
In addition to time, which of the following must be used for a more complete description of the average acceleration of an object?
A. Mass
B. Displacement
C. Velocity
D. None of the above
Answers
EXPLAIN: Why must you reduce friction
order to move certain objects?
Answers
Friction is one of the forces working against a moving object, it makes it harder to move the more friction is exerted on the object. So, by reducing friction, you are making it easier for you to be able to move objects.
Why does it sound different when tapping on an aluminum spoon with an aluminum spoon when tapping on an iron jar?
Answers
Answer:
When the different objects drop on floor then each object vibrate at its natural frequency and produce different sound.
Explanation:
Conclusion: Thus different object has different vibration frequency and when they dropped on floor each vibrate at its natural frequency and produce different sound.
This equation tells the position of the ball, x, at any time t. Let's use it to solve for the position of the ball at t=0.00231 s. What value do you get when you use t=0.00231 s and solve for the position, x?
Answers
The slope of the graph, A, and the starting position of the ball, B, can be used to determine the position of the ball
The position of the ball at time t = 0.00231 s is 59.933 cmReason:
Question; The possible function representing the given equation is presented as follows;
x = A·t + B
Where;
A = 2.59 × 10⁴ [tex]\frac{cm}{s}[/tex]
B = 0.104 cm
t = Time in seconds (s)
x = The position (cm)
Required: The value of the position when t = 0.00231 s
Solution:
The position time graph of an object moving with a constant speed is a straight line with an equation of the form y = m·x + c
Plugging in the value of t = 0.00231 in the given equation gives;
x = 2.59 × 10⁴ × 0.00231 + 0.104 = 59.933
The position x of the ball at time, t = 0.00231 s is 59.933 cm
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1.Which of the following describes kinetic energy?
a. It is the energy of objects at rest. c. It is the energy of unmoving objects.
b. It is the energy of moving objects. d. It is the energy of objects in motion and in position.
2. What kind of energy does a sling shot that is pulled back all the way has?
a. kinetic energy c. elastic potential energy
b. chemical energy d. gravitational potential energy
3. Which of the following affects the amount of potential energy of an object?
a. mass and height b. mass and velocity c. height and velocity d. mass only
4. How will you increase the potential energy of a diver in the Olympics?
a. work out and lose weight c. go to a lower diving board
b. always jump d. go to a higher diving board
5. Which is the best example that something has kinetic energy?
a. water in the glass c. crawling ants on the wall
b. an apple placed at the rooftop d. car parked in front of the house
6. Which quantity does not affect the amount of kinetic energy?
a. mass b. velocity c. location d. none of these
7. If two objects with different mass are placed on the same table, which one contains
more energy?
a. The object with less mass c. Both objects have same amount of energy
b. The object with greater mass d. None of the two objects
8. A 60 kg man walks from the ground to the top of a 80 m tall building. How much
increase in gravitational potential energy is there? (Take g = 10N/kg)
a. 600 N b. 4800 J c. 8000 J d. 48000 J
9. The baseball pitcher throws a 0.145 kg baseball at a velocity of 30.0 m/s. What will be
the kinetic energy of the ball?
a. 62.55 J b. 65.25 J c. 65.55 J d. 62.25 J
10. If you are going to place a stone on a hill, at which point of the hill will it contain the
greatest amount of potential energy?
a. halfway down the hill c. top of the hill
b. on the hillside d. bottom of the hil
Answers
Explanation:
1.a
2.
a
3.
a
4.
a
5.
d
6.
a
7.
a
8.
b
9.
b
10.
c
I did all I can please mark me as brainllestA car travels 500 miles east in 10 hours. What is the velocity of the car?
Show Your Work.
Do Not Forget Your Correct Units.
Answers
Answer:
50m/s
Explanation:
500/10 to find the velocity always divide
the distance bt the time
