0
Kinematics
Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.
3,459 Questions
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.
========================
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.
What happens to potential energy if speed doubles?
An object's potential energy doesn't depend on its speed. You can do anything
you like with the object's speed, and it has no effect on potential energy.
What quantities are needed to calculate angular momentum?
"Rate of change" means that you divide something by time ("per unit time" or "per second"), so you would use the units of angular momentum, divided by seconds.I am not aware of any special name for this concept.
When kinetic energy increases what happens to the mass and velocity?
Kinetic energy of a mass is directly proportional to two variables: its mass and speed.
Many mistake kinetic energy as being proportional to mass and velocity; it is, in fact, mass and speed. (With all technicalities aside, the speed is the factor that matters in computing kinetic energy of an object or a mass).
Kinetic Energy = 0.5mv2 (m = mass and v = speed of the mass)
Therefore, if the speed of the object increases, the kinetic energy increases. If the speed of the object decreases, the kinetic energy decreases.
Similarly, if the mass of the object increases while traveling, its kinetic energy increases. If the mass of the object decreases, the kinetic energy decreases.
All has to do with the directly proportional relationship between the two variables and the kinetic energy.
How many therms per hour does a18000 btu heater use per hour?
A 18,000 BTU heater uses approximately 0.157 therms per hour. This can vary slightly depending on the efficiency of the heater and the specific model.
100 Kilometers an Hour is the same as 60 Miles per Hour, so, the answer should be very easy to find
(hint 75.81)
1 kilometer per hour = 0.621 mile per hour
122 x 0.621 = 75.76 mph
How can an object have forces acting on it but not accelerating?
If all forces in all direction on an object are equal then a box diagram would show that the forces (newtons, N) will cancel each other out, so it will stay fixed in it's position
If the forces are imbalanced then you can achieve acceleration. So for a car to move it must overcome tyre friction, so heat and noise wastage, air resistance, and all the smaller forces trying to stop the engine moving (mostly friction). Once it produces more force than those require it can move.
No. A balanced group of forces has the same effect on an object as no force at all.
Why does ocean waves possess kinetic energy?
Well, since there is movement involved, and since water has a mass, it follows that there is kinetic energy.
Well, since there is movement involved, and since water has a mass, it follows that there is kinetic energy.
Well, since there is movement involved, and since water has a mass, it follows that there is kinetic energy.
Well, since there is movement involved, and since water has a mass, it follows that there is kinetic energy.
How do you solve a throw up problem for physics?
To solve a projectile motion problem in physics, you can break it down into horizontal and vertical components. Use kinematic equations to analyze the motion of the projectile in each direction. Consider factors such as initial velocity, angle of launch, acceleration due to gravity, and time of flight to find the solution.
Is one way to increase the force used to pull a wagon to decrease the mass in the wagon?
Of course not. But decreasing the mass of the wagon may
increase the effectiveness of the force used to pull it.
Look at it this way:
Whether I'm trying to pull a truck or a little red wagon, makes no difference
in the maximum amount of force I'm able to apply. But my maximum can move
the little red wagon a lot faster and a lot farther than it can move the truck.
Sasha and Eric want to go sledding what can give the sled enough energy to move?
Sasha and Eric can use their physical energy to push the sled forward, or they can use gravity by starting at a higher point on a slope to propel the sled downhill. Alternatively, they could also use a motorized vehicle to tow the sled for added speed and momentum.
