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Can an object have a non zero force and have constant kinetic energy?
Wiki User
∙ 11y ago
an object can have a non zero force acting upon it if and only if the sum of all
of the forces on the object is still equal to zero. The sum of the forces is equal
to mass times acceleration. If an object is accelerating, then it does not have
a constant KE therefore the sum of the forces must be equal to 0 so that
acceleration is also equal to zero. For instance, take the case of an object falling
through the air. Initially, the force of gravity is accelerating the object downward
and it is gaining KE. After some time, this object will reach terminal velocity. At
this point, the resistance force of the air on the object negates the force of
gravity and the sum of the forces is equal to zero. The object now falls at a
constant velocity and in turn also a constant KE. It is still being acted upon
by the force of gravity and the resistance force but these forces are canceling
each other out.
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I don't like to delete an answer that somebody put a lot of effort into,
and supervisors don't like it when I become plainly uncomplimentary.
So all I can say is: Use the above answer at your own extreme peril,
and far better to ignore it. Especially the 1st and 3rd sentences.
Wiki User
∙ 11y ago
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How do you find force while given kinetic energy and distance?
The work (energy) done on an object is Force x Distance. If there is no friction, and the object started at rest, then this will also be the kinetic energy that the object has. Then the kinetic energy, Ek = F * d, so F = Ek / d
What is kinetic energy loss?
The braking force x stopping distance (assuming constant braking force) is equal to the loss of kinetic energy of the vehicle.And if it's not constant, you can integrate the dot product of the force vector and the differential x-vector.If you want the power of heat generation, you will need to find how much energy is being dissipated (i.e. how much kinetic energy is lost) per unit of time.
A net force of 22 N accelerates a 4-kg mass over a distance of 18 m. What is the work done by this net force What is the increase in kinetic energy of the mass?
Work done by a force (W) = Force (F) x distance (m) W = 22 x 18 = 396 Joules According to the law of conservation of Energy, the total energy of a closed system is constant, but can change from one type to another. Therefore, the work given to the object must be converted into the kinetic energy of the object. So, Increase in Kinetic energy = work done = 396 Joules
An object of mass 'm' is moving with the constant velocity 'v' how much work should be done on the object to bring it to rest?
An object with mass 'm' moving with velocity 'V' has kinetic energy of [ 1/2 m V2 ] .In order to bring it to rest, its velocity has to be reduced to zero, and in order toaccomplish that, the kinetic energy has to be drained off and sent somewhere else.An external force has to absorb energy from the object, i.e. do negative work on it,equal to its kinetic energy, or- 1/2 m V2
What is the net force acting if an object is moving along a surface with a constant acceleration?
If the object is moving along a horizontal surface with a constant acceleration,then the net vertical force on it is zero, and the net horizontal force on it is(the pushing force) minus (any kinetic friction force where it rubs the surface).The numerical value of that net force is(the acceleration) times (the object's mass).
What is the coefficient of kinetic energy?
The coefficient of kinetic energy is a constant for friction acting as a retarding or dissipative force to calculate the total force on the object. The coefficient of friction u is represented in equation by the relation F = u*N, where N is the normal force.
Is kinetic energy a force or motion or energy?
Kinetic energy is energy of motion. The kinetic energy of an object is the energy it posses because of its motion.
What do the sentence mean an object's total kinetic and potential energy?
Kinetic energy is the energy of motion. Kinetic energy is stored in an object when you apply force to it, lifting it, for example. That energy stays in the object as potential energy until it is released when you drop the object.
Kinetic energy of an object is increasing and potential energy remains constant explain in tems of conservation of energy?
This can happen if there is an external force acting on the object. Then the object is accelerating, and its kinetic energy is increasing. The extra energy comes from the external force. Example: Push a bowling ball on a long table. It keeps rolling faster, its kinetic energy increases, but its potential energy due to its height doesn't change, until it reaches the edge of the table and starts to fall.
Why is it easier to determine the coefficient of kinetic friction if the object moves with a constant velocity?
if moving with constant velocity the only force to slow it down is kinetic friction; if it is accelerating velocity is not constant and an additional force is being applied.
When are an objects potential energy and kinetic energy equal?
When an object is stationary in a plane, (no hill or slope) then potential energy and kinetic energy are equal. Following the case, if an object is stationary at the top of a hill, it has stored energy (potential energy) due to gravitational attraction, as the force of gravity attracts the object towards the ground and once the object gets some kind of motion, all those potential energy will change to kinetic energy. **************************** Actually, the Object CAN be moving, but it is moving Parallel to its Reference Frame, and at a Constant Velocity.
What force is acting when the kinetic energy of a moving object is converted into a thermal energy?
Friction
What force is acting when the kinetic energy of a moving object is converted into thermal energy?
Friction
What force causes a falling object to gain kinetic energy?
gravity
What is the force that is ultimately responsible for an object's acceleration?
Kinetic energy and Torque.
What is the transfer of energy that causes an object to move in the direction of the force?
external energy to kinetic energy (maybe)
What makes an object have more kinetic energy?
An object has more kinetic energy when the temperature gets hotter. The particle's speed increase and begin to flow more rapidly. An object has more kinetic energy when the temperature gets hotter. The particle's speed increase and begin to flow more rapidly.
