Physics CAST Review #1

Front

What is accuracy in measurements?

Back

Accuracy refers to how close a measured value is to the actual (true) value.

Front

What does net force mean?

Back

Net force is the overall force acting on an object when all the individual forces are combined.

Front

How do you calculate displacement?

Back

Displacement is calculated as the final position minus the initial position, taking direction into account.

Front

What is the relationship between speed and net force for objects of equal mass?

Back

For objects of equal mass, the object that experiences the largest change in speed has the largest net force acting on it.

Front

What does a constant rate of increase in a graph indicate?

Back

A constant rate of increase indicates a linear relationship between the variables plotted on the graph.

Front

What is the formula for calculating velocity?

Back

Velocity is calculated as displacement divided by time (v = d/t).

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 for an object to experience zero net force?

Back

An object experiences zero net force when all the forces acting on it are balanced, resulting in no acceleration.

Front

How can you determine if a graph represents constant speed?

Back

A graph represents constant speed if the line is straight and has a constant slope.

Front

What is the significance of the slope in a distance-time graph?

Back

The slope of a distance-time graph represents the speed of the object; a steeper slope indicates a higher speed.