Semester 1 Review Pt 1

Front

What is the difference between distance and displacement?

Back

Distance is the total path length traveled by an object, while displacement is the shortest straight-line distance from the initial to the final position, including direction.

Front

How do you calculate the magnitude of displacement when given two perpendicular distances?

Back

Use the Pythagorean theorem: Displacement = √(x² + y²), where x and y are the distances traveled in perpendicular directions.

Front

What is constant acceleration?

Back

Constant acceleration means that the rate of change of velocity is constant over time.

Front

How do you calculate the height of an object in free fall after a certain time?

Back

Use the formula: Height = 0.5 * g * t², where g is the acceleration due to gravity (approximately 9.81 m/s²) and t is the time in seconds.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) = (final velocity (v) - initial velocity (u)) / time (t).

Front

What is the significance of air resistance in motion problems?

Back

Air resistance opposes the motion of an object and can affect the time it takes to reach the ground, especially for lighter objects.

Front

What is the role of mass in the motion of falling objects?

Back

In a vacuum, all objects fall at the same rate regardless of mass due to gravity; however, air resistance affects lighter objects more.

Front

What is the relationship between speed, distance, and time?

Back

Speed = Distance / Time; this formula allows you to calculate any one of the three if the other two are known.

Front

What is the concept of free fall?

Back

Free fall is the motion of an object under the influence of gravity only, with no other forces acting on it.

Front

How do you determine the total displacement from multiple segments of motion?

Back

Add the individual displacements vectorially, considering their directions.