Physics Forces, Simple Machines, PK

If you pull a book out of the middle of a stack of books, the books on top will fall down because...

• An object at rest/motion wants to stay at rest/motion until acted on by an unbalanced force. 
• the net force equals 0N and it is a balanced force. 
• for every action there is an equal action. 
• they won't fall, this is wrong. 

A push from the west will cause an object to move to the 

• north
• south
• east
• west

Click it or Ticket it... A seatbelt in a car acts

• as a balanced force to keep you in your seat. 
• an unbalanced force and keeps you from going through the window in an accident. 
• as a net force of 0N
• as a simple machine making work easier. 

The highest point of something in motion is

• Greatest Kinetic Energy
• Greatest Potential Energy
• Greatest Energy
• Motion

Right before the lowest point in an object's motion is 

• Greatest Potential Energy
• Greatest Energy
• No Energy
• Greatest Kinetic Energy

In tug of war, the winning team 

• will produce a net force of 0N.
• will produce a less force than the other team.
• will produce a greater force than the other team.
• will push instead of pull. 

To calculate net force of two forces moving in opposite directions, you will 

• add
• subtract
• multiply
• do nothing

To calculate net force of two forces moving in the same direction, you will 

• add
• subtract
• multiply
• do nothing

The more _____, the more inertia.

• weight
• mass
• speed
• height

What force is acting on all objects?

• gravity
• balanced force
• unbalanced force
• mass