Chapter Two: Motion

These flashcards cover key concepts from the lecture notes on motion, including definitions, types of motion, and important equations.

What defines an object as being at rest in physics?

An object is at rest when it does not change its position with respect to time.

How is motion defined in physics?

An object is in motion if it changes its position with respect to time.

What are the two essential components to specify the position of an object?

Distance and direction with respect to a reference point.

What is circular motion?

Circular motion occurs when a body rotates around a particular point or line while keeping the distance of the particles of the body unchanged.

What is translational motion?

Translational motion happens when all the particles of an object travel the same distance at the same time in the same direction.

What is periodic motion?

Periodic motion is when an object passes through a definite point in the same direction after a specific interval of time.

How is speed defined in physics?

Speed is the rate of change of distance with respect to time.

What is velocity?

Velocity is the rate of change of displacement with respect to time; it is a vector quantity.

What is acceleration?

Acceleration is the rate of change of velocity with time.

What is the difference between distance and displacement?

Distance is a scalar quantity representing the total path traveled, while displacement is a vector quantity representing the shortest distance from the initial to the final position.

What is the first law of falling bodies according to Galileo?

All bodies falling from rest and from the same height without any resistance traverse equal distances in the same time.

What is deceleration?

Deceleration, or negative acceleration, occurs when the velocity of an object decreases over time.

How do you calculate acceleration?

Acceleration is calculated by the formula a = (v - u) / t, where v is the final velocity, u is the initial velocity, and t is the time taken.

What are the equations of motion under uniform acceleration?

The equations include v = u + at, s = ut + 1/2 at², and v² = u² + 2as.

What is the difference between speed and velocity?

Speed is a scalar quantity that measures how fast an object is moving, while velocity is a vector quantity that measures the object's speed in a specific direction.

Explain how to calculate acceleration using the formula.

Acceleration is calculated using the formula a = (v - u) / t, where v is the final velocity, u is the initial velocity, and t is the time taken.

What defines motion in physics?

Motion is defined as a change in position of an object with respect to time.

Describe the difference between distance and displacement.

Distance is the total length of the path traveled, a scalar quantity, while displacement is the shortest distance from the initial to the final position, a vector quantity.

What are the equations of motion under uniform acceleration?

The equations include v = u + at, s = ut + 1/2 at², and v² = u² + 2as.