Work, Power, and Simple Machines

What is the unit used to measure Power?

• Joule
• Watt
• Newton
• Pascal

Force X Distance = _______?

• Work
• Power
• Energy
• Force

Which two factors affect the gravitational attraction between two objects?

• Density and Friction
• Mass and Distance
• Density and Distance
• Mass and Friction

Tags

NGSS.MS-PS2-4

Which example shows an unbalanced force? 

• A pencil sitting on a desk
• a car parked in a parking lot
• a coat laying on the floor
• a child sliding down a slide

Tags

NGSS.MS-PS2-2

Which of these is an example of a balanced force? 

• A book sitting on a chair
• a ball rolling down the road
• a fish swimming in its bowl
• a plate sitting in the sink

Tags

NGSS.3-PS2-1

Distance/Time = __________?

• Speed
• Force
• Work
• Power

Tags

CCSS.8.EE.C.7B

In which of these cases is work being done? 

• A student sleeps
• A student pushes a locked door that does not move
• a student carries his chair into another room
• A student sits on the carpet

Tags

NGSS.MS-PS3-5

Where should the fulcrum be placed in order for the student to use the least amount of effort possible? 

• point A
• point B
• point C
• point D

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Your mass increases as you grow. How does this affect the force of gravitational attraction between you and other objects?

• the force decreases
• the force increases
• the force stays the same
• the force does not change without a change in distance.

Tags

NGSS.MS-PS2-4

A _____ is a fixed bar  that us free to move around a fixed point known as a fulcrum.

• pulley
• inclined plane
• lever