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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
The plane was in the air for 4.5 hours (1,350 miles divided by 300 miles per hour).
The plane was in the air for 4.5 hours. This can be calculated by dividing the distance (1350 miles) by the average speed (300 miles per hour).
General phyics question Does a wall exert a greater force on an object if it bounces or sticks?
Force can be defined as the derivative of momentum with respect to time or: dp/dt = d(mv)/dt
Since the mass stays the same, we can take that out:
m * dv/dt (It's worth noting that this is the derivation of the F=ma equation)
Now to answer your question, this depends on the amount of time the object is being pushed by the wall. If the time is equal, then the wall will apply a greater force on the ball if it bounces back because it has to change the ball's momentum by a greater amount to get it to move back towards the thrower.
Between which two letters on the transperecy does potential energy change to kinetic energy?
At the point where the ball is released, potential energy is at its highest (transferred from the person's hand) and kinetic energy begins to increase due to the ball's motion. This transition typically occurs between the letters 'A' and 'B'.
Tempetur is the measure of the average of the kinetic energy of a substance?
Temperature is a measure of the average kinetic energy of the particles in a substance. The higher the temperature, the more kinetic energy the particles have. Temperature is commonly measured in units such as degrees Celsius (°C) or Fahrenheit (°F).
25 km per hour equals how many knots?
Sustained winds of 50 knots are in the middle of the range of a tropical storm.
A knot is a nautical mile per hour, so since a nautical mile is about 1.15 miles, a knot is about 1.15 miles per hour. Therefore, 50 knots is about 58 miles per hour or about 93 km/h.
What is The Incredibles hulk's speed in mph?
As for reaction speed, he can catch and dodge artillery shells and missiles, which move very fast.
He can easily leap hundreds and even thousands of miles, and has reached the speed of an ICBM.
He can easily jump and catch supersonic planes while in flight.
He's kept up with superfast foes as well.
The Nameless Pharaoh
According to Newton's second law, F=ma. That is, the bear's acceleration should be proportional to the total force acting on the bear. As the bear's velocity is constant, its acceleration is zero. Therefore, the total Force acting on the bear is zero. Thus, the friction has to be equal in magnitude and opposite in direction to the bear's weight. As W=mg, we get that its weight is 9.8*400=3,920 Newton. Thus, the friction acting on the bear is 3,920 Newton upwards.
Polaris 1996 ultra sp 680 top speed?
i have a 1990 Indy 650 with tripple pipes, plastic skis and racing clutch weights and i have got it to go 110 mph but i am shure it will go at least 120 mph
Calculate number of joules in 1kwh?
1 Watt = 1 Joule/second 1 kilowatt = 1000 Watts = 1000 Joules/second
1 hour = 60 minutes = 3600 seconds
1 kWh = 1000 (Joules/second) * 3600 (seconds) = 3,600,000 Joules = 3.6 MJoules
If you add an objects potential and kinetic energies you get its mechanical energy?
Yes, mechanical energy is the sum of an object's potential energy (due to its position) and kinetic energy (due to its motion). This total energy remains constant in the absence of external forces, according to the principle of conservation of energy.
When does a bouncy ball has least potential energy?
Right before it hits the ground and right after it bounces back up.
Potential energy is "stored energy;" the the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system. If an object is moving very fact, it has kinetic energy, but if an object is in a position where it has the potential to move fast but isn't moving or moving very slowly, the object has a lot of potential energy. A bouncy ball has a parabolic pattern (Like an upside-down U) of movement as it bounces. At the top of the parabola- when the bouncy ball is highest in the air- it has the highest potential energy because it is not moving for that instant, but has the capacity to do so. as it moves downwards, it loses potential energy and gains kinetic energy. By the time it is about to hit the ground, it has the greatest kinetic energy because it gains momentum, and the least potential energy. As the ball bounces back up, it loses momentum, so it is losing kinetic energy and gaining potential energy. A bouncy ball has the least potential energy right before it hits the ground and right after it begins bouncing back up.
There is also an exchange of kinetic and potential energy as the ball hits the ground. Elastic energy is the potential mechanical energy stored in the configuration of a material or physical system as work is performed to distort its volume or shape. So, the kinetic gravitational energy (because gravity is doing the work) changes to elastic potential energy (it is not moving in any way for an instant, but has the potential to move in the sense of being squished down), and as the energy is being used to distort the shape of the ball, elastic kinetic energy. As the ball has been distorted to its maximum extent, it has more potential energy, which is transferred to kinetic as the ball first changes back to its original shape, elastic kinetic energy, and then bounces back up, when it begins to lose its kinetic energy again.
How does a volcano represent kinetic and potential energy?
a volcano has both potential and kinetic energy because when the molten rocks have no moment before the irruption ............... when the irruption is above to start, the potential energy turns into kinetic energy and irrupts ........... the lava slows down and stop ( potential energy )
If you have a kinetic energy of 45 j and your mass is 30kg then what is your velocity?
To find the velocity, you can use the equation for kinetic energy: KE = 0.5 * mass * velocity^2. Rearranging the equation gives 45 = 0.5 * 30 * velocity^2. Solving for velocity gives velocity = √(2 * 45 / 30) = √3 = approximately 1.73 m/s.
What is a characteristic of kinetic energy?
A characteristics is that they only travel through matter
What is the sum of kinetic energy and potential energy in a closed system?
In a closed system, the sum of kinetic energy and potential energy remains constant, according to the conservation of energy principle. This means that the total mechanical energy (kinetic energy + potential energy) of the system is conserved and does not change over time as long as there are no external forces doing work on the system.
Why do kites ascend in flight?
Kites ascend in flight due to the lift force generated by the airflow over their wings. As the wind hits the kite at an angle, it creates a pressure difference that results in lift, pushing the kite upwards. By maneuvering the strings attached to the kite, the flyer can control its ascent and direction.
What is the net forces in soccer?
There are many forces at work during a game of soccer. Some of them inlude:
- The force of gravity on the players
- The force of gravity on the soccer ball
- The force of friction between the soccer ball and the ground
- The force of friction between the soccer ball and the air
- The force of the players' feet when they kcik the ball
- The force of the goalie's body blocking a goal
- The force of the net stopping the ball after a goal is scored
It should be noted that calculating net forces requires vector algebra.
How many miles does light travel in 100 seconds?
The speed of light in a vacuum is 186282.397 miles per second.
The distance something travels in a given time and at constant speed is given by
d = s*t
where d is the distance traveled, s is the speed, and t is the time.
In our case, s = 186282.397 miles per second and t= 100 seconds.
d = (186282.397 miles per second)*(100 seconds) = 18628239.7 miles
So, in 100 seconds, light travels 18628239.7 miles.
False. Kinetic energy is indeed the energy possessed by a body in motion, not by a stationary object. The energy exhibited by a stationary train would typically be in the form of potential energy, such as gravitational potential energy due to its position on the tracks.
Does kinetic energy increase with size?
Velocity of molecular movement is lower in larger molecules because it takes more energy to get the larger molecule moving. On the other hand, smaller molecules move more rapidly causing its velocity to be higher.
What is the name of the force exerted on a child coming down a slide?
Answer #1:
It could be called a lot of things, but you might just call it a push force
or an applied force to be clear.
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Answer #2:
After Dad has stopped pushing and the child is in the process of sliding down,
there are two real forces and one pseudo-force acting on her. I don't think any
of them has a name, but they're easy to describe:
-- the gravitational force, pointing straight toward the center of the Earth;
-- the normal force, pointing perpendicular to the slide outward, and equal to the
component of the gravitational force that's perpendicular to the slide inward;
-- the pseudo-force of friction, pointing parallel to the slide, and opposite to the
child's motion;
Which are the scalar quantities?
A scalar quantity is a non-vector quantity. In a vector quantity, direction is relevant. In a scalar quantity, it is not. For example, mass (measured in kg.) is a scalar; force is usually indicated as a vector (magnitude in Newton, but the direction is also relevant).
A scalar quantity is a non-vector quantity. In a vector quantity, direction is relevant. In a scalar quantity, it is not. For example, mass (measured in kg.) is a scalar; force is usually indicated as a vector (magnitude in Newton, but the direction is also relevant).
A scalar quantity is a non-vector quantity. In a vector quantity, direction is relevant. In a scalar quantity, it is not. For example, mass (measured in kg.) is a scalar; force is usually indicated as a vector (magnitude in Newton, but the direction is also relevant).
A scalar quantity is a non-vector quantity. In a vector quantity, direction is relevant. In a scalar quantity, it is not. For example, mass (measured in kg.) is a scalar; force is usually indicated as a vector (magnitude in Newton, but the direction is also relevant).
The height ( h ) of the object at time ( t ) can be modeled by the equation ( h(t) = -4.9t^2 + 5t ), where ( t ) is the time in seconds. This equation represents the object's height over time while it reaches its highest point at 2 meters after 0.5 seconds, then falls back down due to gravity.
