2024 Fall Semester Physics Review Part 2

Front

What is net force?

Back

The net force is the vector sum of all the forces acting on an object. It determines the object's acceleration according to Newton's second law.

Front

What is the horizontal velocity of a ball at the top of its path when thrown off a cliff?

Back

The horizontal velocity at the top of the ball's path is equal to its initial horizontal velocity, v_x.

Front

How do you determine the net force acting on an object?

Back

The net force is determined by adding all the forces acting on the object, taking into account their directions.

Front

What does it mean when an object is accelerating?

Back

An object is accelerating if it is changing its speed or direction. This includes speeding up, slowing down, or changing direction.

Front

What does the area under a velocity vs. time graph represent?

Back

The area under a velocity vs. time graph represents the displacement of the object.

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 is the formula for calculating acceleration?

Back

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

Front

What is inertia?

Back

Inertia is the property of an object to resist changes in its state of motion. It is directly related to the object's mass.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.

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.