Physics Semester 1 Final Exam Review - long

Front

What is Gravitational Potential Energy (G.P.E.)?

Back

Gravitational Potential Energy (G.P.E.) is the energy an object possesses due to its position in a gravitational field, calculated as G.P.E. = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How do you calculate the acceleration of an object moving in a circle?

Back

The acceleration of an object moving in a circle (centripetal acceleration) is calculated using the formula a = v²/r, where v is the velocity and r is the radius of the circle.

Front

What is the formula for Kinetic Energy?

Back

The formula for Kinetic Energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

Define Elastic Potential Energy.

Back

Elastic Potential Energy is the energy stored in elastic materials as the result of their stretching or compressing, calculated as EPE = 1/2 kx², where k is the spring constant and x is the displacement from the equilibrium position.

Front

What is the difference between Kinetic Energy and Potential Energy?

Back

Kinetic Energy is the energy of an object in motion, while Potential Energy is the stored energy of an object due to its position or state.

Front

What is the unit of energy in the International System of Units (SI)?

Back

The unit of energy in the SI system is the Joule (J).

Front

What does the term 'instantaneous velocity' mean?

Back

Instantaneous velocity is the velocity of an object at a specific moment in time, indicating both speed and direction.

Front

How does mass affect Gravitational Potential Energy?

Back

Gravitational Potential Energy increases with mass; doubling the mass of an object will double its G.P.E. at a given height.

Front

What is the relationship between velocity and acceleration in circular motion?

Back

In circular motion, the direction of velocity changes continuously, and acceleration (centripetal acceleration) is directed towards the center of the circle, causing the change in direction.

Front

What is the significance of the height in calculating G.P.E.?

Back

Height is crucial in calculating G.P.E. because it determines how much potential energy an object has due to its position above the ground.