physics forces and motion

Problems involving constant speed and average speed Newton's First Law of Motion Newton's Second Law of Motion Newton's Third Law of Motion Universal Law of Gravitation Effect of gravity on an object at the surface of the Earth Applying a force ..

Problems involving constant speed and average speed Newton's First Law of Motion Newton's Second Law of Motion Newton's Third Law of Motion Universal Law of Gravitation Effect of gravity on an object at the surface of the Earth Applying a force ..

A force is often defined as a "push" or a "pull". There is nothing untrue with this statement, but does not really tell you much about a force. Instead of defining force, it substitutes an antonym. A physicist prefers to define a force in terms of what it doe..

Is the push/pull which changes or tends to change the state of rest or uniform motion in a straight line. It is a vector quantity, i.e., it has both magnitude and directio..

In the physical world, one of the most common phenomena is motion. The branch of Physics, which deals with the behaviour of moving objects, is known as mechanics. Mechanics is further divided into two sections namely Kinematics and Dynamics. Kinematics deals with..

. Now the question is why we do not see the Earth moving towards the stone. Newton's second law of motion gives a correct explanation for this. According to the second law of motion, whenever a force is acting on an object, it produces acceleration in it. The gravitati..

You have understood from Newton's first law that change in motion is caused due to an external force. We are now in a position to define force..

Summary - Force produces or prevents motion of a body. Friction is a force that opposes motion. Moment is defined as the turning effect of a force about a pivot or fulcrum. The centre of gravity of a body is a point where the whole weight of the body see..

An interaction which causes an acceleration is called a force. Only when we push a ball does it begin to move. A ball lying on a horizontal floor doesn't start to move all by itself. For that matter, take a parked a car on a horizontal road. Only when we activate the engine and engage the..

What do you observe when you drop a stone from a height? The stone which was initially at rest starts moving towards the ground and attains a maximum speed just before it touches the ground. Is the stone moving with a constant speed? No, it is not moving with uniform speed. Its speed keeps changing..