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Kinematics
Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.
3,459 Questions
How many mph do you have to go to go 870 feet in 2 minutes?
To cover 870 feet in 2 minutes, you would need to travel at an average speed of 7.25 feet per second. Converting this to miles per hour, you would need to travel at approximately 4.95 miles per hour to cover that distance in that time.
What are the kinetic moving sculptures that Alexander Calder invented?
Alexander Calder is known for inventing mobiles, which are kinetic sculptures that move in response to air currents. He also created stabiles, which are stationary sculptures that give the illusion of movement through their abstract shapes and forms. Calder's innovative use of wire and metal transformed sculpture into a dynamic and interactive art form.
Miguel biked 29040 ft in an hour convert this to mph?
29,040 feet in one hour converts to 5.5 miles per hour.
What is the definition of point of concurrency?
A point of concurrency is a point where three or more lines, segments, or rays intersect or meet. Common points of concurrency in geometry include the centroid, circumcenter, incenter, and orthocenter of a triangle.
What is rotational kinematics?
Rotational kinematics is the study of the motion of objects that spin or rotate around an axis. It involves concepts such as angular velocity, angular acceleration, and rotational analogs of linear motion equations like displacement, velocity, and acceleration. Rotational kinematics helps describe how objects move and rotate in a circular path.
The resultant velocity of the plane is 70 mi/hr. This is because the headwind subtracts 10 mi/hr from the plane's airspeed of 80 mi/hr, resulting in a net speed of 70 mi/hr in the direction of travel.
What will be the direction of friction on a accelerating car by the road?
The direction of friction on an accelerating car by the road is opposite to the direction of the car's motion. As the car accelerates forward, the frictional force between the tires and the road acts in the opposite direction to resist the car's motion and provide the necessary traction for it to move forward without slipping.
When can the equations of kinematics not be used?
Equations of kinematics may not be accurate when dealing with very high speeds close to the speed of light due to relativistic effects. Similarly, they may not be applicable in quantum mechanical systems that involve particles on very small scales. Additionally, for systems with significant air resistance or non-constant forces, kinematic equations may not provide accurate results.
Based on the provided information, the Ackerman steering gear of the car seems to be properly designed with the correct dimensions to ensure proper steering geometry. It is important to ensure that the steering arms and rods are properly aligned to prevent issues such as bump steer. Make sure to check and adjust the alignment if needed to maintain optimal steering performance.
Kx 125 top speed with pro circuit pipe?
With a Pro Circuit pipe, a Kawasaki KX125 typically has a top speed of around 70-75 mph, depending on various factors such as rider weight, riding conditions, and overall bike setup.
The sound pressure decreases with distance r in a free field (direct field).
The next question is. How does the sound decrease with increasing distance? After which law?
The sound pressure p diminishes with distance after the 1/r law. Sound pressure decreases inversely as the distance increases with 1/r from the sound source. The Sound pressure level (SPL) decreases by (−)6 dB per doubling of distance from the source to 1/2 (50 %) of the sound pressure initial value.
Sometimes it is said, that the sound decreases with with 1/r², the inverse square law. That is really wrong.
Equations: p2 / p1 = r1 / r2 and p2 = p1 x r1 / r2 or r2 = r1 x p1 / p2
p1 = sound pressure 1 at reference distance r1 from the sound source.
p2 = sound pressure 2 at another distance r2 from the sound source.
Scroll down to related links and look at "How does the sound or the noise decrease with distance?"
To find the magnitude of the average net force, we can use Newton's second law: F = ma. First, convert the mass to kg (899 kg) and the speed to m/s (26.7 m/s). Then, calculate the acceleration using the equation a = (vf - vi) / t, where vf is the final velocity, vi is the initial velocity, and t is the time. Once you have the acceleration, plug it into the formula F = ma to find the average net force.
The required speed for a satellite to maintain orbit just above the Earth's surface with a centripetal acceleration of 9.8 m/s^2 is approximately 7.9 km/s. This speed is calculated using the formula for centripetal acceleration, which includes the radius of the Earth as well as the gravitational acceleration.
Why is oscillatory motion differs periodic motion?
Simple harmonic motion is what we might say is happening when an object is in some non-complex periodic way. That is, the object experiences a force that displaces it, the displacement occurs and reaches some maximum value, and then the object returns to the "original" conditions and repeats the process. Let's take the example of a pendulum and consider what is happening.
A periodic function is a function that repeats its values in regular intervals or periods. The most important examples are the trigonometric functions, which repeat over intervals of length 2Ï€.
What is a Cr85r's expert top speed?
The top speed of a CR85R, a 2-stroke motocross bike made by Honda, is around 65 mph (105 km/h) in ideal conditions. However, actual top speed can be influenced by factors such as rider weight, terrain, and bike modifications.
Suppose a ball falls from rest from height h, then by equation of motion:
h=1/2*g*t2 . and for horizontal motion, x=vx*t. put value of t in first equation:
h=1/2*g*x2/v2, or
x=(h*2*v2/g)1/2. or
x=k*h1/2, so
x1/h11/2=x2/h21/2;
put the values,
x1=601/2*76/44.11/2;
Work with calculator now......
If an objects velocity is doubled what happens to its inertia?
assuming its not starting at zero, if an object velocity is doubled, its kinetic energy (KE) is four times. If its trebled , its KE is nine times
equation : KE = (m*v^2)/2 joules
m=mass
v=velocity
Downstream speed refers to the rate at which data can be downloaded from the internet to your device. It is typically measured in megabits per second (Mbps) and is important for activities like streaming video, downloading files, or browsing the web. A higher downstream speed allows for faster downloads and smoother online experiences.
What type of energy can Kinetic energy can be converted to?
Yes it can. Potential Energy is "stored energy", while kinetic energy is the energy of an object in motion.
History
A roller coaster train going down hill represents merely a complex case as a body is descending an inclined plane. Newton's first two laws relate force and acceleration, which are key concepts in roller coaster physics. At amusement parks, Newton's laws can be applied to every ride. These rides range from 'The Swings' to The 'Hammer'. Newton was also one of the developers of calculus which is essential to analyzing falling bodies constrained on more complex paths than inclined planes. A roller coaster rider is in an gravitational field except with the Principle of Equivalence.
Potential Energy
Potential energy is the same as stored energy. The "stored" energy is held within the gravitational field. When you lift a heavy object you exert energy which later will become kinetic energy when the object is dropped. A lift motor from a roller coaster exerts potential energy when lifting the train to the top of the hill. The higher the train is lifted by the motor the more potential energy is produced; thus, forming a greater amount if kinetic energy when the train is dropped. At the top of the hills the train has a huge amount of potential energy, but it has very little kinetic energy.
Kinetic Energy
The word "kinetic" is derived from the Greek word meaning to move, and the word "energy" is the ability to move. Thus, "kinetic energy" is the energy of motion --it's ability to do work. The faster the body moves the more kinetic energy is produced. The greater the mass and speed of an object the more kinetic energy there will be. As the train accelerates down the hill the potential energy is converted into kinetic energy. There is very little potential energy at the bottom of the hill, but there is a great amount of kinetic energy.
Theory
When the train is at the top and bottom of the hill there is not any potential or kinetic energy being used at all. The train at the bottom of the first drop should have enough energy to get back up the height of the lift hill. The "Act of Faith" in riding these amazing rides which seems more of a phenomena that is only a theory. In practices, the train never could make it back up the hill because of dissipative forces. Friction and air resistance, and even possible mid-course breaks, are dissipative forces causing the theory to be changed but not destroyed. These forces make it impossible for the train to have enough energy to make it back up the lift hill's height. In the absence of the dissipative forces the potential and kinetic energies(mechanical energy) will remain the same. Since the mechanical energy is destroyed by the forces, the first hill is always the highest
Can an object have kinetic energy and potential energy at the same time?
a body cannot have both kinetic and potential energy at the same time because, a moving body can only possess kinetic energy at a time, but potential energy is one possessed by a body with respect to its possition.
What is the impact velocity of a rock thrown at 8ms from 100m cliff?
For these calculations, air resistance is neglected and acceleration due to
gravity is assumed to be -9.8 m/s2. It is assumed the the rock was thrown horizontally.
Velocity is a vector, with an x component and a y component. The x component will not change, so the x component at the point of impact will be 8 m/s. The y component of the velocity is initially zero, and the acceleration is -9.8 m/s2. The final y component of the velocity can be found using the formula
vy2 = v0y2 + 2(a)(h)
so vy2 = 2(-9.8)(-100), so vy is 44.3. The x and y components of the velocity vectors now need to be put to together using the Pythagorean theorem. So
v2 = 44.32 + 82 so the final velocity is 45.02 m/s. The angle relative to the ground can be found using the tangent. tan-1(44.3/8), which is 79.8 degrees.
What is the impact velocity of a rock thrown horizontaly from a cilff?
The impact velocity of a rock thrown horizontal from a cliff depends on two things, the initial speed of the rock (vi) and the height of the cliff (h). The final velocity (impact velocity) is represented by vf
For this formula, air resistance is neglected, and acceleration due to gravity is assumed to be 9.8 m/s2. The acceleration is positive here because down is being treated as the positive direction. You will get the same result if you use negative 9.8 m/s2 and make the height negative. sqr() means square root.
vf = sqr(19.6h + vi2)
For example if the rock was thrown off a 3 meter high cliff at 20 m/s, the impact velocity would be sqr(19.6 x 3 + 202), which would be sqr(58.8 + 202), which would be 21.42 m/s.
The angle relative to the ground is the inverse tangent of sqr(19.6h)/vi
which in this case is tan-1( sqr(19.6 x 3)/20), which is tan-1(7.67/20) which is 21.0 degrees.
When did mach of the day come on?
"Match of the Day" typically airs on Saturday evenings during the football season in the UK, usually around 10:30pm. There are also additional episodes that air on midweek evenings, covering midweek football matches. Check your local TV listings for the most up-to-date schedule.
mgsin (theta) - (static) mu * mgcos(theta) = 0 rearrange the equation and cancal mg therefore, tan ( theta) = mu (static) theta = arctan (static mu) If the static coefficient is 0.57, then theta = arctan (0.57) theta = 29.7 degree Note: from the equation, the mass of the block is independent to the angle. Whether you have a bigger block or smaller block, it will start sliding @ 29.7 degree.
