Intro to Unit 3

What is the definition of work in physics?

• The process of completing a task

• The effort put into studying for an exam

• Force applied over a distance to a system

• The energy required to raise a weight

What unit is used to measure work in physics?

• Meter

• Joule

• Watt

• Newton

Tags

NGSS.HS-PS2-1

How do you calculate work when the force is applied at an angle?

• Force divided by the cosine of theta

• Force times distance times the cosine of theta

• Force times distance times the sine of theta

• Force times distance

What does the term 'Joule' represent in physics?

• A unit of power

• A unit of velocity

• A unit of force

• A unit of work or energy

Tags

NGSS.HS-PS1-4

What is the significance of the angle (theta) in calculating work?

• It represents the direction of motion

• It is used to calculate the component of force that does work

• It determines the type of energy involved

• It is only relevant in non-conservative systems

What is kinetic energy?

• Energy stored in an object at rest

• Energy due to an object's motion

• Energy lost due to friction

• Energy stored in a spring

Tags

NGSS.HS-PS3-2

How is gravitational potential energy calculated?

• Mass times velocity squared

• Mass times gravity times height

• Half times mass times velocity squared

• Force times distance

Tags

NGSS.MS-PS3-2

What distinguishes a conservative system from a non-conservative system?

• Conservative systems can create energy

• Non-conservative systems lose energy through work

• Conservative systems have unlimited potential energy

• Non-conservative systems can't have kinetic energy

What is the formula for calculating power?

• Work over time

• Distance over time

• Velocity over time

• Force over distance

How does the concept of power relate to work and energy?

• Power is the rate at which work is done or energy is transferred

• Power is a measure of the amount of work done regardless of time

• Power is the potential energy divided by time

• Power is the kinetic energy an object possesses due to its motion

Tags

NGSS.MS-PS3-5