The correct answer is a=tv−u. Explanation: Retardation means negative acceleration. The acceleration is defined as the rate of change of velocity.
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What is retardation and retarding force?
Retardation: The force acting in the opposite direction to the motion of a body is called the retarding force. This force produces negative acceleration for the body which is called retardation or deacceleration.
Is retarding force the same as friction?
When an object moves over the surface of another object, its motion is always opposed by a retarding force that resists motion. This retarding force is called friction and it always acts in the direction opposite to the motion of the object.
What is a slowing force called?
Friction is such a force that slows down or stops a moving body as it opposes.
What is the unit of retardation?
Unit of retardation is same as the unit of acceleration i.e. m/s2.
What is the definition of retardation in physics?
Retardation is defined as the rate of decrease of velocity with time. suppose if a car is slowing down,its velocity is decreasing,so its acceleration is negetive. But retardation is positive. Retardation is negetive of acceleration.
What is retardation example?
Retardation can also be named as negative acceleration or deceleration. Example: When we apply brakes to the vehicle, the velocity of the vehicle decreases (Final velocity becomes less than initial velocity). This means that retardation has taken place.
What is retarding potential?
In electrodynamics, the retarded potentials are the electromagnetic potentials for the electromagnetic field generated by time-varying electric current or charge distributions in the past.
What is called impulsive force?
An impulsive force is a force which acts on an object for a short period of time. In a collision that results in a change in the velocity or momentum of one or more the objects involved in the collision, an impulsive force is primarily produced.
How is retardation calculated?
Retardation is negative acceleration. By definition of acceleration, we know v = u + at. Therefore we can find retardation.
What is the resistive force?
In physics, resistive force is a force, or the vector sum of numerous forces, whose direction is opposite to the motion of a body, and may refer to: Friction, during sliding and/or rolling.
Which of the following force is slow down the movement of object?
Force of friction always tends to slow down the motion of an object on a surface.
What force slows you down in water?
Water resistance is a type of force that uses friction to slow things down that are moving through water. It is often called drag. Water resistance doesn’t have to be just water, however, it can happen to objects moving through any type of fluid. Water resistance happens because of the particles in water or the fluid.
What type of force is closing a door?
Thus, overall, we can conclude that closing a door is an example of a contact force.
Is a force can make an object slow down or stop?
We can describe how something moves by using terms such as ‘at rest’, ‘constant speed’, ‘speeding up’ and ‘slowing down’. A force can speed up or slow down an object. A force can change the direction in which an object is moving. A bigger force on an object will produce a bigger change in the motion.
What is the symbol of retardation?
Answer: The SI unit of retardation is metre per second squared (m/s2).
What is the difference between retardation and acceleration?
The increase in velocity of an object per unit of time is referred to as acceleration. Retardation is the inverse of acceleration and is defined as a decrease in velocity per unit of time. Acceleration can be positive (+), zero (0), or negative (-). Retardation is the inverse of acceleration.
Is retardation a scalar or vector quantity?
Answer. Retardation is also called negative accleration. It is a vector quantity, because it has magnitude as well as direction.
What is meant by retardation or deceleration?
Retardation (or deceleration) of a body whose velocity is decreasing with time is defined as the negative of acceleration. In other words, it is equal to the magnitude of acceleration of a body whose velocity is decreasing with time.
Is retardation and deceleration same?
Deceleration, also known as retardation or negative Acceleration, is the Acceleration acts in the opposite direction of Motion and is responsible for reducing the Velocity of a body. SI unit of Deceleration is m/s².
Is retardation is always negative?
It can be positive, Negative or Zero. It can be positive, Negative or Zero. Rate of Negative change of velocity with respect to time is called Retardation.
What is retardation or deceleration class 11 physics?
When the velocity decreases with respect to time it is termed as retardation or deceleration. In reality negative acceleration is commonly called retardation Its SI unit. is m/s2.
What is the unit and formula for retardation?
a = (v-u)/t². Here, ‘u’ is the initial velocity, ‘v’ is the final velocity and ‘t’ is the time taken. If the starting velocity/ initial velocity is more than the final velocity, then it is called Retardation. In short, the negative acceleration value denotes retardation.
Why is it called retarded potential?
The electromagnetic field travels at certain velocity and hence the potentials at the observation point (due to the changing charge at source) are experienced after a certain time delay. Such potentials are called retarded potentials and the propagation delay t – R/c is called retarded time.
Is retarding potential and stopping potential same?
The minimum potential required to stop the electron emitted from metal so that its kinetic energy becomes zero is called stopping potential or retarding potential. e is the charge on an electron, and V0 is stoping potential.