Introduction to Engineering and Physics Concepts

What is the definition of an engineer?

• Someone who solves mathematical problems

• Someone who uses science and tools to build a product that solves a practical problem

• Someone who studies the stars and planets

• Someone who operates machinery

What does the term 'trade-off' mean?

• Achieving all outcomes simultaneously

• Giving up a desirable outcome for another desirable outcome

• The act of exchanging goods

• A compromise that satisfies no one

How is speed defined?

• The time it takes for an object to travel a certain distance

• The distance an object travels in a certain amount of time

• The force applied to an object

• The rate at which an object changes direction

What is the relationship between kinetic energy and speed?

• Inverse relationship

• No relationship

• Direct relationship; more kinetic energy = faster speed

• Kinetic energy has no relation to an object's speed

What is the formula for kinetic energy?

• kinetic energy = mass × velocity

• kinetic energy = distance/time

• kinetic energy = ½(mass)(velocity)^2

• kinetic energy = force × distance

How does mass relate to kinetic energy?

• Doubling mass doubles kinetic energy

• Mass has no impact on kinetic energy

• Kinetic energy is inversely proportional to mass

• Mass decreases kinetic energy

What is force?

• A measure of an object's mass

• The distance an object travels

• A push or pull on an object

• The speed of an object

According to Newton’s First Law of Motion, what happens to an object in motion?

• It slows down immediately

• It stays in motion at a constant speed

• It changes direction randomly

• It stops abruptly

What is inertia?

• The force applied to an object

• The resistance of an object to change its motion or direction

• The speed of an object

• The distance an object travels

What is the main difference between contact and noncontact forces?

• Contact forces involve direct touch, while noncontact forces do not

• Contact forces only act on stationary objects

• Noncontact forces only act on moving objects

• Contact forces only act in one direction