Physics Review Fall Semester 2022-2023

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

How do you calculate net force in two dimensions?

Back

To calculate net force in two dimensions, use vector addition. For example, if you have forces in the x and y directions, add the x components together and the y components together.

Front

What is thrust?

Back

Thrust is the force that propels an object forward, typically produced by engines or propellers.

Front

What happens to kinetic and potential energy as a roller coaster descends?

Back

As a roller coaster descends, kinetic energy increases while potential energy decreases.

Front

What is the work-energy principle?

Back

The work-energy principle states that the work done on an object is equal to the change in its kinetic energy.

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 gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = m × g × h, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the formula for kinetic energy?

Back

Kinetic energy (KE) is calculated using the formula KE = 0.5 × m × v², where m is mass and v is velocity.

Front

How do you find the average force exerted on an object?

Back

Average force (F) can be calculated using the formula F = Δp / Δt, where Δp is the change in momentum and Δt is the time interval.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = m × v.