Answer:
Work = 165670.4 J = 165.67 KJ
Explanation:
First, we will find the deceleration of the car, using the 3rd equation of motion:
[tex]2as = v_{f}^2 - v_{i}^2\\[/tex]
where,
a = deceleration = ?
s = skid distance = 40 m
vf = final speed = 0 m/s
vi = initial speed = 17.2 m/s
Therefore,
[tex]2a(40\ m) = (0\ m/s)^2 - (17.2\ m/s)^2\\a = - 3.698\ m/s^2[/tex]
the negative sign indicates deceleration here.
Now, we will calculate the braking force applied by the brakes on the car:
[tex]F = ma\\F = (1120\ kg)(-3.698\ m/s^2)\\F = - 4141.76\ N[/tex]
the negative sign indicates braking force.
Now, we will calculate the work done using the magnitude of this force:
[tex]Work = |F|s\\Work = (4141.76\ N)(40\ m)\\[/tex]
Work = 165670.4 J = 165.67 KJ
A girl travels 50 m East in 10-minutes and later 100m north in 15 minutes. what is her total displacement?
Answer:
111.80 meters
Explanation:
Displacement = A^2 + B^2
50^2 + 100^2 = 12 500 (route the answer )
S= 111.80 meters
A 1.0 kg toy car is released at the top of a frictionless track on the left and rolls off of the track from its right
side ramp. The car starts at a height of 0.80 m, goes through a 0.50 m diameter loop, and exits the ramp at a
height of 0.25 m.
Answer: -5.4
Explanation:
Khan said so
Answer:
2.5 J
Explanation:
What is the change in the car gravitational potential energy from A-B
10. What is the acceleration due to gravity at a location
where a 15.0-kilogram mass weighs 45.0 newtons?
1) 675 m/s2
2) 9.81 m/s2
3) 3.00 m/s2
4) 0.333 m/s2
If a sealed syringe is plunged into cold water, in which direction will the syringe piston slide? *
A) No movement will occur
B) in
C) out
D) The direction cannot be predicted.
Answer:
a
Explanation:
can you help me with my question According to the narrator in Paragraph 3 of "The Celebrated Jumping Frog of Calaveras County," Simon Wheeler's tone throughout his entire tale was A earnest and sincere, B. excited and pressing, C. sad and melancholy,
Name three things that are NOT made of matter
Answer:
Light.
Sound.
Heat.
Energy.
Gravity.
Explanation:
A horse accelerates from rest at 3 m/s2. How long does it take to reach a speed of 12 m/s?
Answer:
it will take 4.0 seconds
how could you weaken the force of gravity between cars and the Earth?
**I WILL MARK BRAINLEST**
Answer:
The answer you have selected is correct.
Explanation:
Increase radius, force of gravity decreases
All electrical devices must have two of what
Answer:
a voltage source and a conductor.
Explnation:
All electric circuits have at least two parts: a voltage source and a conductor. The voltage source of the circuit
a = 40
B= 75
m = 50 kg
kt=0.3
------------
To which mass of m2 will mass ml go down the hill? What will be the
acceleration of m2 (a)?
On which interval of masses m2 will the system rest/not move?
On which mass m2 will the system go backwards (ml up the hill) What
will be the acceleration of ml (a)?
Solve with II. Newton's law.
Answer:
A DAY IN THE LIFE OF METIS JOURNAL, I WROTE IT HOPE U LIKE IT ;))) XD
We, who live in the west, were Nomadic. So we always moved from place to place to hunt buffalo and other fur-bearing animals. And now again we have to shift everything we collected , like, all the essential needs we collected. It’s really hard to shift stuff, But when you move to a new place you get to see new beautiful places. They are just so satisfying to see! It’s like all my work(like the shifting work) is paid off. I love it! We always meet the Hudson’s bay company employees, and give them furs which we took from the bissons and other furry animals we hunted. And in exchange they give us their (Hudson’s Bay company) goods. Which is good! Because then we or I won't be able to enjoy that delicious pemmican!
The one reason that makes me proud of my parents is that because of them I am like a translator for both sides in the fur trade! Anyways coming back to the present. As I said before, we were moving today to another place, But on the way some people along with my father will ride the famous York boats carrying supplies to fur posts. I begged my father to take me with him! And as usual he gave me some silly reason for me to stay. And now since I don’t have anything to do I will-..Nevermind, My mom’s calling me. Okay after helping my mom keep the fur posts into the York boats me , my mom, and the others are just relaxing and enjoying nature just to take a break. Since, I am so obsessed with my Journal notebook today I’m just going to sit here and right what comes to my mind. I’m not like the others who always seem to be talking with someone. I like my own space!
I kind of miss my dad already, but he and his fellow members need to travel the waterways from the red river further west and north to hudson bay. These red river carts also travel the trek back and forth over land to St. Paul, Minnesota and to posts in saskatchewan. Speaking about the red river, the only large settlement in the region is the red colony. About 12000 people lived in this colony around Fort Garry. Some were the original Selkirk settlers or their descendents. They had come from Scotland with lord Selkirk when he established the colony in 1811. Many of these original settlers were poor farmers who had been displaced from their lands in scotland. They had endured many hardships in the early years of settlement, including foods, hunger, and sickness. I love studying about other colonies, cultures , history etc.
Explanation:
write this as your answer you will get extra marks
A hydraulic press consist of of two
cylinders of cross sectional areas
0.2m2 and 5m². The piston in the
smaller cylinder is pushed down
with a force of 100N through a
distance 0.2m. calculate
Links
(0)
The pressure transmitted
(ii)
The force exerted by the
piston in the larger cylinder.
Answer:
Explanation:
i )
area of small piston = 0.2 m²
Force = 100 N
pressure created on small piston
= 100 / .2 = 500 N/m²
According to Pascal's law , this pressure will be transmitted to larger cylinder .
area of larger cylinder = 5 m²
ii )
pressure = force / area
force in the large cylinder = pressure x area of large cylinder
= 500 x 5
= 2500 N .
Brainliest if right.
Show your work: A wolf chasing an elk. The wolf has a mass of 100 kg and is running with a velocity of 16 m/s
to the right. What is the wolf's momentum?
The elk has a mass of 180 kg. What does the elk's speed have to be for it to have the same momentum as the
wolf?
Answer:
Wolf=1600kg*m/s
Elk= 8.89 m/s
Explanation:
p=mv
p=100*16
p=1600
1600=180*v
v=8.89 m/s
I need help with this ?
Answer:
Frequency
Explanation:
Doesn't say how often he exercises
Way back in the _____________, there lived a man named Isaac Newton who really loved physics.
Group of answer choices
15th to 16th century
17th to 18th century
20th to 21st century
1st to 2nd century
Answer:
i can't click the answer bottom but the answer is "17th to 18th century" i hope this helps
A ball is thrown 6m above the ground. Its total energy at that point is 12 J. What is the total energy of the ball at a halfway point of motion
Answer:
6J
Explanation:6J
Using the potential Energy formula;
Potential Energy = mass * acceleration due to gravity * height
If a ball is thrown 6m above the ground. Its total energy at that point is 12 J
Get the mass of the ball
12 = m * 9.8 * 6
m = 12/58.8
m = 0.204kg
The height of the ball halfway = 6/2 = 3m
Potential energy half way = mgh
Potential energy half way = 0.204 * 9.8 * 3
Potential energy half way = 6J
How does inertia relate to forces
Answer:
Even in space, objects have mass. And if they have mass, they have inertia. That is, an object in space resists changes in its state of motion. A force must be applied to set a stationary object in motion.
Hello Dudes!
Pls help me in these 2 easy questions!
a. Define speed.
b. State its SI unit.
c. Write the formula for speed.
Answer:
speed is distance covered by body at certain or per time.
SI unit m/s
formula:
speed =distance covered/time taken
5) What advice would you share with your colleagues about the pandemic
Answer:
Advice on how to stay safe and have fun during the pandemic becuase most people are in lockdown and they are having trouble trying to have a fun but they can
How would the particles be arranged in an object that has a high density? What about in
an object that has a low density?
Answer:
Explanation:
The particles in solids are very close together. They are tightly packed, giving solids high densities.
The particles in gases are very far apart, so gases have a very low density.
Brainliest if right.
Show your work: A wolf chasing an elk. The wolf has a mass of 100 kg and is running with a velocity of 16 m/s
to the right. What is the wolf's momentum?
The elk has a mass of 180 kg. What does the elk's speed have to be for it to have the same momentum as the
wolf?
Answer:
Explanation:
wolfs momentum is p=mv
so its 100 x 16 = 1600kg m/s
the elks velocity is 1600 = 180 x V
1600/180 = 8.88 m/s
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (50pts)
Explanation:
object D would be the hardest to stop, it has more mass, thus it has a higher momentum than the others, requiring a larger force to stop
just making sure... Dancing is cardiovascular exercise, correct? >,
Answer:
Hey mate....
Explanation:
This is ur answer.....
Dancing is a great cardio workout. Like any good, low-impact cardio workout, dancing can improve cardiovascular health, increase stamina, strengthen bones and muscles and stave off illnesses....
SO IT'S YES!
Hope it helps you,
Mark me brainliest plss
FOLLOW ME!
Answer:
yes because you are doing cardio activitys
Which of the following is a service performed by local government?
I
Answer:
Creating a police department
Explanation:
Well through process of elimination, I doubt a local government has authority over the military, economy, or relationships with countries.
explain the forces of that affect the soccer balls path.
Answer:
yeah its correct
Explanation:
As the ball spins, friction between the ball and air causes the air to react to the direction of spin of the ball. ... Therefore, when a soccer player kicks the ball right of center the ball spins counter-clockwise and the Magnus force acts left, causing the ball to curve left.
In order to have an airplane ascend, it needs to have more___
than weight. *
Drag
Weight
Lift
Thrust
Answer:
drag weight lift thrust
What is the charge of electron?
Answer:
negative I hope u got ur answer mate
Can someone tell me what all these mean in pe pls I’m confused on what they mean all of them
A 12.0 cm object is 9.0 cm from a convex mirror that has a focal length of -4.5 cm. What is the distance of the image from the mirror?
Answer: -3cm
Explanation:
Answer:
-3
Explanation:
edg
Ralston had lots of spicy and oily food which triggered heartburn. The doctor prescribed
him Milk of Magnesia.
a. Why did the doctor prescribe milk of magnesia?
b. What is the chemical name of milk of magnesia?
Answer:
A.) The doctor decided to prescribe milk of magnesia because of the mineral Magnesium. Magnesium helps to reduce stomach acid and increases the water in the intestines which helps induce motility in the intestines. Heartburn is caused by stomach acids traveling up into your esophagus which causes that feeling of your heart burning. Milk of magnesia will help soothe this.
B.) The chemical name of milk of magnesia is magnesium hydroxide.
Explanation:
The chemical name of the milk of magnesia is magnesium hydroxide.
An antacid is any substance that is taken to decrease or neutralize the acidity of the gastro intestinal tract. We must note that the gastrointestinal tract is natural acidic.
However, hyperacidity of the gastrointestinal tract could lead to heartburn. This acidity is neutralized using an antacid such as milk of magnesia. The chemical name of the milk of magnesia is magnesium hydroxide.
Learn more about antacid: https://brainly.com/question/1301963
If the amount of force from the group on the left was 235 N, what is the amount of force from the group on the right
Answer:
(F = ma ) Newton's second law states that force is proportional to what is required for an object of constant mass to change its velocity. This is equal to that object's mass multiplied by its acceleration.
Answer all of them an you will get the brain list
Answer:
4. Force = 178.6 Newton.
5. Acceleration = 2.28 m/s².
6. Force = 178.6 Newton.
Explanation:
4. Given the following data;
Acceleration = 3.8 m/s²
Mass = 47kg
Force = mass * acceleration
Force = 47 * 3.8
Force = 178.6 Newton.
5. Given the following data;
Force = 785N
Mass = 345kg
Acceleration = force/mass
Acceleration = 785/345
Acceleration = 2.28 m/s²
6. Given the following data;
Acceleration = 6m/s²
Force = 32N
Mass =force/acceleration
Mass = 32/6
Mass = 5.33 kilograms