AP Physics 1 Semester Exam REVIEW

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula F = ma.

Front

Define acceleration in physics.

Back

Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity, meaning it has both magnitude and direction.

Front

What is the formula for calculating gravitational force?

Back

The gravitational force (weight) can be calculated using the formula F = mg, where F is the gravitational force, m is the mass of the object, and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).

Front

Explain the concept of friction.

Back

Friction is a force that opposes the relative motion of two surfaces in contact. It can be static (preventing motion) or kinetic (acting during motion).

Front

What does it mean for a surface to be frictionless?

Back

A frictionless surface is an idealized surface where no frictional force acts on an object in contact with it, allowing for unimpeded motion.

Front

How do you calculate net force?

Back

Net force is calculated by vectorially adding all the individual forces acting on an object. If forces are in the same direction, they are added; if in opposite directions, they are subtracted.

Front

What is the significance of the angle in force problems?

Back

The angle of a force affects its components. Forces can be resolved into horizontal and vertical components using trigonometric functions (sine and cosine) based on the angle.

Front

Define kinetic friction and its role in motion.

Back

Kinetic friction is the frictional force that acts on an object in motion. It opposes the direction of motion and is generally less than static friction.

Front

What is the relationship between mass and acceleration in Newton's Second Law?

Back

According to Newton's Second Law, as mass increases, for a given force, the acceleration decreases. This means heavier objects accelerate less than lighter ones when the same force is applied.

Front

Explain the concept of free body diagrams.

Back

Free body diagrams are graphical representations used to visualize the forces acting on an object. They help in analyzing the net force and resulting motion.