Friction and Net Forces

What is the SI unit used to measure force?   

• Grams 
• Liters
• Pounds 
• Newtons 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

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

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

• added 
• subtracted 
• mutiplied 
• divided 

Tags

NGSS.MS-PS2-2

With unbalanced forces, the object will move in the direction of the _______ force.

• larger 
• smaller 
• equal 

Tags

NGSS.MS-PS2-2

A force is...

• a push 
• a pull 
• a push or pull 
• a push or pull with a specific magnitude and direction 

Tags

NGSS.MS-PS2-1

Forces that have a net force of zero and the object's movement is not effected.

• Balanced Forces 
• Unbalanced Forces 

To calculate net force, when forces are acting in opposite directions, the forces are ...

• added 
• subtracted 
• multiplied 
• divided 

Tags

NGSS.MS-PS2-2

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

What surface would have the most friction?

• Glass
• Marble
• Pool table
• Sandpaper

Matt had a toy truck weighing 15 grams and a toy car weighing 6 grams. Using the same amount of force on each toy, he pushed them both across his desk. The car reached the other side of the desk in 1.5 seconds, but it took the truck 3.5 seconds to reach the the other side of the desk. Why did the car travel the same distance in a shorter amount of time?

• The car had less mass and traveled at a faster speed than the truck.
• The car had more mass and traveled at a faster speed than the truck.
• The truck had more mass and traveled at a faster speed than the car.

Tags

NGSS.MS-PS2-2