Physical Science - Physics Review

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. It can be expressed with the formula F = ma (Force = mass x acceleration).

Front

Where is a magnet the strongest?

Back

A magnet is strongest at its poles.

Front

What is radiation in the context of heat transfer?

Back

Radiation is the transfer of heat through electromagnetic waves, such as the heat from the sun.

Front

What happens to the weight of an object on Mars compared to Earth?

Back

The weight of an object will decrease on Mars due to its lower gravitational pull.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated using the formula KE = 1/2 mv² (where m is mass and v is velocity).

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 the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms, while weight is the force exerted by gravity on that mass, measured in newtons.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, such as gravitational potential energy, which depends on height.

Front

What is the formula for calculating gravitational potential energy?

Back

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