Motion Diagrams, Graphs, Calculation

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be positive (speeding up), negative (slowing down), or zero (constant speed).

Front

What does it mean if an object is not accelerating?

Back

If an object is not accelerating, it means that its velocity is constant, and it is either at rest or moving at a constant speed in a straight line.

Front

Is wind blowing at 20 mph a vector or scalar quantity?

Back

Wind blowing at 20 mph is a scalar quantity because it only has magnitude and no specific direction.

Front

Define a scalar quantity.

Back

A scalar quantity is a physical quantity that is described by magnitude only and does not require direction.

Front

What is a unit of acceleration?

Back

The unit of acceleration is meters per second squared (m/s²).

Front

What is the difference between vector and scalar quantities?

Back

Vector quantities have both magnitude and direction (e.g., velocity, force), while scalar quantities have only magnitude (e.g., speed, mass).

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What does a motion diagram represent?

Back

A motion diagram visually represents the position of an object at various points in time, showing its motion and changes in velocity.

Front

How can you determine if an object is accelerating from a graph?

Back

An object is accelerating if the slope of the velocity-time graph is changing; a straight line indicates constant velocity, while a curved line indicates acceleration.

Front

What is the significance of the area under a velocity-time graph?

Back

The area under a velocity-time graph represents the displacement of the object over the time interval.