When a body is in rest?

When a body is in rest?

A body is said to be at rest when its acceleration doesn’t change with time.

Can a body be said to be at rest?

What kind of force keeps the body at rest?

Inertia is a force. Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity. Inertia is a force which brings all objects to a rest position. All objects have inertia.

What is meant by term retardation?

Retardation can be defined as the decrease in the velocity per second. Since negative acceleration is retardation, its S.I. unit is the same as acceleration. i.e., metre per second square ms−2.

Can a body be at rest and motion at same time?

Rest and motion are relative terms. A body at rest with respect to one observer may be in motion with respect to another observer. For example a person sitting in a moving train is at rest with respect to the train. He is in motion with respect to a person standing outside.

What does mass describe?

Mass is a measurement of how much matter is in an object. Mass is a combination of the total number of atoms, the density of the atoms, and the type of atoms in an object.

What is it called when the number of forces acting simultaneously on a body?

when a number of forces acting on a body bring about a change in its state of rest or uniform motion in a straight line, then these forces acting on the body are said to be unbalanced forces.

How can you say that a body is in rest or motion?

A body is said to be in motion when its position continuously changes with respect to time. When the average speed is zero then the body is not in motion. Also when the position doesn’t change with time, the body is said to be at rest.

Can a body be both at rest as well as in motion?

Yes.It is possible. Explanation: When the body is at rest, the earth is moving. Hence , in this sense, a body can be in both rest position and in motion.