Semester 1 Final Review

Front

What is Efficiency?

Back

Efficiency is the ratio of useful work output to the total work input, expressed as a percentage. It measures how effectively energy is converted into work.

Front

What is Inertia?

Back

Inertia is an object's resistance to changes in its state of motion. It is directly related to the mass of the object.

Front

What type of energy is converted when a mousetrap car is released?

Back

When a mousetrap car is released, the spring's potential energy is converted into kinetic energy.

Front

What does Newton's 3rd Law state?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What happens to the work done by the spring in a mousetrap car?

Back

The spring does positive work on the car, while friction does negative work.

Front

Define Work in physics.

Back

Work is defined as the product of force and the distance over which it acts, measured in joules.

Front

What is Power?

Back

Power is the rate at which work is done or energy is transferred, measured in watts.

Front

Explain the concept of Force.

Back

Force is a push or pull on an object that can cause it to accelerate, measured in newtons.

Front

What is the relationship between Kinetic Energy and Motion?

Back

Kinetic energy is the energy of an object in motion, calculated as 1/2 mv², where m is mass and v is velocity.

Front

What is Friction?

Back

Friction is the resistance that one surface or object encounters when moving over another, which can do negative work.