Chapter 2: Motion in 1D (Knight 2.1-2.3)

Front

What is the definition of speed in motion?

Back

Speed is the distance traveled per unit of time, typically measured in meters per second (m/s). It is a scalar quantity.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What does it mean when speed is decreasing?

Back

When speed is decreasing, the object is slowing down, which indicates a negative acceleration.

Front

What does it mean when speed is increasing?

Back

When speed is increasing, the object is accelerating, indicating a positive acceleration.

Front

What is displacement?

Back

Displacement is the change in position of an object, measured as a straight line from the initial position to the final position, and is a vector quantity.

Front

What is the significance of zero displacement?

Back

Zero displacement indicates that the object has returned to its original position, regardless of the distance traveled.

Front

How can you determine if two objects have the same velocity?

Back

Two objects have the same velocity if they cover equal distances in equal intervals of time in the same direction.

Front

What is the formula for average velocity?

Back

Front

What is the concept of instantaneous velocity?

Back

Instantaneous velocity is the velocity of an object at a specific moment in time, often determined using the derivative of the position function.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity per unit of time, measured in meters per second squared (m/s²). It can be positive (speeding up) or negative (slowing down).