Forces, Friction & Gravity

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• Mass and Distance 
• Mass and Matter
• Distance and Weight 
• Weight and Mass

Tags

NGSS.MS-PS2-4

What is the SI unit used to measure weight? 
*remember the definition of weight! 

• Grams 
• Liters
• Pounds 
• Newtons 

The force of gravity acting on an object is the object's ______.

• Mass
• Matter
• Weight 
• Terminal velocity 

What is the SI unit used to measure force? 

• Pounds 
• Grams 
• Newtons 
• kg/ m²

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 
• 40N 
• 10N 
• 70N

Tags

NGSS.MS-PS2-1

What is the force acting between any two objects in the known universe all the time?

• Gravitational Force 
• Force of Friction 
• Normal Force 
• Electromagnetic Force 

Tags

NGSS.MS-PS2-4

What is a friction force acting upon an object on wheels?

• Static 
• Sliding 
• Rolling 
• Fluid 

The speed an object reaches when the force of gravity is balanced by the force of air resistance is called _____

• Accleration 
• Terminal Velocity 
• Free fall 
• Balanced velocity 

Tags

NGSS.MS-PS2-2

To calculate net force, when forces are acting in the same direction, the forces are ...

• added 
• subtracted 
• mutiplied 
• divided 

Tags

NGSS.MS-PS2-2

Pressing on the breaks when driving is an example of...

• sliding friction 
• static friction 
• rolling friction 
• fluid friction