AP Physics - Fall Pre-Final review 2022 MC

Front

What is equilibrium in physics?

Back

Equilibrium occurs when the net force acting on an object is zero, meaning the object is either at rest or moving with a constant velocity.

Front

What is static friction?

Back

Static friction is the force that resists the initiation of sliding motion between two surfaces in contact. It acts when an object is at rest.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding past each other. It acts when an object is in motion.

Front

How do you calculate work done?

Back

Work done (W) is calculated using the formula W = F × d × cos(θ), where F is the force applied, d is the distance moved, and θ is the angle between the force and the direction of motion.

Front

What is the formula for calculating the components of velocity?

Back

The horizontal component (Vx) = V * cos(θ) and the vertical component (Vy) = V * sin(θ), where V is the velocity and θ is the angle.

Front

What is the coefficient of friction?

Back

The coefficient of friction (μ) is a dimensionless scalar value that represents the frictional force between two bodies in contact, defined as the ratio of the force of friction to the normal force.

Front

What is the significance of the angle of incline in physics?

Back

The angle of incline affects the gravitational force acting on an object on the slope, influencing the object's acceleration and the frictional forces at play.

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 (F = ma).

Front

What is the relationship between mass and weight?

Back

Weight (W) is the force exerted by gravity on an object and is calculated as W = m × g, where m is mass and g is the acceleration due to gravity (approximately 9.8 m/s² on Earth).

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time, and it can be calculated using the formula a = (Vf - Vi) / t, where Vf is final velocity, Vi is initial velocity, and t is time.