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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 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.
Energy of an object increases when what is done on the object?
The energy of an object increases when work is done on the object, meaning that a force is applied to the object over a distance. This transfer of energy can result in the object gaining kinetic energy, potential energy, or both.
How do express kinetic energy?
In order to successfully Exert inner-creative-energy One must be able to remain grounded at all times in order to c kundalini discharge down the dual central poles (feet) then begin to move the potent energy up through the spinal column into the acumen percipience (crown chakra)
Point intersection and a point concurrency?
Point of intersection is where the point where 2 lines or a line and a plane meet, or in a 3-dimensional space three planes meet, or any other graphs that intersect in a point.
Point of concurrency is the intersection point of concurrent lines.
In geometry, two or more lines are said to be concurrent if they all pass through a single point.
For example, the perpendiculars bisectors of the sides of a triangle are concurrent and they meet at the point of concurrency.
So point of intersection may be the same as point of concurrency, but when it comes to examples other than lines, point of intersection is often used. When it comes to just lines, either one is ok.
All four balls would have the same kinetic energy since kinetic energy is determined by both the mass and velocity of the object. If all four balls have the same mass and velocity, their kinetic energy would be equal.
A rocket's speed at launch is typically zero, as it starts from a stationary position on the ground. The rocket gradually accelerates as it is propelled by its engines, reaching higher speeds as it ascends into space.
The tempertaure scale that is based on the actual kinetic energy of the molecules is the?
The tempertaure scale that is based on the actual kinetic energy of the molecules is
How Work related to potential ang kinetic energy?
Work is directly related to both potential and kinetic energy. When work is done on an object, it can increase its potential energy by changing its position or state. At the same time, work can also increase an object's kinetic energy by changing its speed or movement. This relationship between work, potential energy, and kinetic energy is fundamental in understanding the behavior of objects in various physical scenarios.
What energy has by a truck increasing speed downhill?
The truck's kinetic energy is increasing as it gains speed downhill due to its motion. The gravitational potential energy of the truck is being converted into kinetic energy as it moves downhill, with the conversion being more pronounced the steeper the incline.
Momentum = (m V) = 37.9
KE = (1/2 m V2) = 93.3
1/2 m V2 = (1/2 V) (m V) = 93.3
(1/2 V) (37.9) = 93.3
1/2 V = 93.3/37.9
V = 2 x 93.3 / 37.9 = 4.9235 meters per second (rounded)
Bonus ! ... now we also know that the object's mass is [ 37.9 / 4.9235 ] = 7.697 kg (rounded)
Does velocity increase impact?
Velocity is the speed something travels, so if anything travels at a higher rate of speed, the impact will be greater. No matter what the material speeding may appear to be, it will always impact harder with greater velocity. It's like shooting a paintball up close to a wall. The impact will be far harder than at long range, and a large splatter will appear on the wall. That's velocity for yah!
- The woman pulls on the crate, but the crate does not move.
- The woman pulls on the crate and it moves 5m to the right.
- The woman pulls on the crate and it moves 10m to the right.
- The woman pulls on the crate and it moves 15m to the right.
So, ranking from least to greatest work done by her force would be 1, 2, 3, 4.
Kinetic energy is directly proportional to the square of velocity, so the kinetic energy will increase. If the velocity increases from 20 m/s to 32 m/s, the kinetic energy will increase by a factor of (32/20)^2 = 2.56. Therefore, the kinetic energy will be 4500 Joules * 2.56 = 11520 Joules when the velocity is 32 m/s.
Kinetic Energy = (1/2)*(mass)*(velocity)2
If you double the mass, then the kinetic energy will double
If you double the velocity, the kinetic energy will increase by a factor of 4
Derive centre of mass of semi circular disc?
The center of mass of a semi-circular disc lies along the axis of symmetry of the disc, at a distance of 2R/π from the straight edge, where R is the radius of the disc. This can be derived using calculus and integrating the mass function over the semi-circle.
What is the kinetic energy called when it is moving?
Kinetic energy is when it's moving. Potential energy is when the object is motionless.
How do you compare the units of work and kinetic energy?
Work and kinetic energy are defined as scalar energy and have the same units joules.
dW=F.dr = (dP/dt) dr=dP(dr/dt) = dPv = vdP= mvdv
W = F.r = mv^2/2.
Physics has defined scalar energy but has no definition for vector energy mcV.
Torque which is T= Fxr should be recognized as vector energy but it is defined as "Torque". This is another example of Physics not appreciating that the Universe is made of Quaternions, a Scalar part and a Vector part. E= FR = -F.R + FxR where the scalar energy has been defined as work (F.R) and the vector energy is defined as Torque FxR.
Kinetic energy is a transformation of work in terms of mass and velocity versus force and distance. The vector energy is not called energy.
See link:
http://en.wikipedia.org/wiki/Torque
What 2 factors effect an object's of kenetic energy?
Kinetic energy is (1/2) x mass x velocity2.
Kinetic energy is (1/2) x mass x velocity2.
Kinetic energy is (1/2) x mass x velocity2.
Kinetic energy is (1/2) x mass x velocity2.
