Motion And Force

1. NewTons Law of Motions

1.1. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

1.2. The acceleration of an object depends on the mass of the object and the amount of force applied.

1.3. Whenever one object exerts a force on another object, the second object exerts an equal and opposite on the first.

2. Equations of Motion

2.1. Uniformly Accelerated Bodies in a Straight Line:

2.1.1. Vf= Vi+at

2.1.1.1. S= Vit+ 1/2 (at^2)

2.1.1.1.1. 2aS= Vi^2 - Vf^2

2.2. Uniform Gravitational Field in a Non-Resistive Medium

2.2.1. Vf= Vi+gt

2.2.1.1. S=Vit+1/2(gt^2)

2.2.1.1.1. 2gS= Vf^2 - Vi^2

3. Displacement

3.1. A change in the position of body from its initial position to its final position.

4. Velocity

4.1. Definition

4.1.1. The Velocity of an object is defined as the displacement covered per unit time

4.2. Average Velocity

4.2.1. The change in an object's position in a given direction divided by the time it took to move from the initial to the final position.

4.3. Instantaneous Velocity

4.3.1. The instantaneous velocity, also known as simple velocity, tells us how fast an object is moving anywhere along its path.

5. Acceleration

5.1. Definition

5.1.1. Rate at which velocity changes with time, in terms of both speed and direction.

5.2. Average Acceleration

5.2.1. The change in velocity divided by the elapsed time

5.3. Instantaneous Acceleration

5.3.1. The ratio of velocity change over a given time interval until the time interval reaches zero.