Zamara0idn
Answered

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it is the force that does not directly act on an object​

Sagot :

Meimei11idn

Answer:

An object is at rest does not mean that no force is acting on it. It is the vector sum of all such forces which equals zero for an object at rest. CASE 1:

Considering a basketball of weight 1kg, if it has been kept stationary on the ground, there are two forces acting on it. These are it’s weight (gravity) and equal and opposite force from the ground (normal reaction). Since these forces are equal and opposite to each other, the vector sum of these equals zero and thus, the ball is in static equilibrium i.e. rest.

CASE 2:

Even when a body is moving at a constant SPEED, the force acting on it is zero, because it has no acceleration. This doesn’t mean that the body is at rest. Hence these conditions must be studied carefully while dealing with the bodies at rest.

Reyrelacer33gmailcomidn

Answer:

Sir Isaac Newton was an English scientist who was interested in the motion of objects under various conditions. In 1687, he published a work called Philosophiae Naturalis Principla Mathematica, which described his three laws of motion. Newton used these laws to explain and explore the motion of physical objects and systems. These laws form the basis for mechanics. The laws describe the relationship between forces acting on a body and the motions experienced due to these forces. The three laws are as follows:

If an object experiences no net force, its velocity will remain constant. The object is either at rest and the velocity is zero or it moves in a straight line with a constant speed.

The acceleration of an object is parallel and directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object.

  • When a first object exerts a force on a second object, the second object simultaneously exerts a force on the first object, meaning that the force of the first object and the force of the second object are equal in magnitude and opposite in direction.
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