Physics Midterm Review Part B

Front

What is displacement in physics?

Back

Displacement is a vector quantity that refers to the change in position of an object. It is the shortest distance from the initial to the final position, along with the direction.

Front

How do you calculate the overall displacement using the Pythagorean theorem?

Back

To calculate overall displacement, use the formula: R = √(x² + y²), where x and y are the horizontal and vertical displacements, respectively.

Front

What is the difference between distance and displacement?

Back

Distance is a scalar quantity that measures the total path length traveled, while displacement is a vector quantity that measures the shortest straight-line distance from the starting point to the endpoint.

Front

What is Newton's 1st Law of Motion?

Back

Newton's 1st Law states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass, expressed as F = ma.

Front

What is Newton's 3rd Law of Motion?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What is the formula for calculating velocity?

Back

Velocity is calculated using the formula: v = d/t, where v is velocity, d is displacement, and t is time.

Front

What is the acceleration due to gravity (g) on Earth?

Back

The acceleration due to gravity (g) on Earth is approximately 9.81 m/s², often rounded to 10 m/s² for simplicity in calculations.

Front

What happens to objects in free fall in a vacuum?

Back

In a vacuum, all objects fall at the same rate regardless of their mass, meaning they will hit the ground at the same time.

Front

How do you determine the magnitude of a resultant vector?

Back

The magnitude of a resultant vector can be determined using the Pythagorean theorem if the vector components are perpendicular.