8.6a

What is the net force on this box?

• 30 N left

• 25 N right

• 5 N left

• 55 N right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

To calculate net force you must

• Add the forces

• Subtract the forces

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following has a net force of 0 Newtons?

• An asteroid moving at a constant speed through space 

• A car accelerating from a stop sign

• A box of dishes falling from a counter 

• A rocket taking off 

Which could be an example of an unbalanced force?

• A plate sitting on a dining table

• A ball at the top of a hill that is not moving

• A soccer ball kicked in space, traveling at a constant speed

• A baseball that has just been thrown to home plate.

Tags

NGSS.MS-PS2-2

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Ask a question

Communicate results

Analyze results

Form a hypothesis

Conduct experiment

Tags

NGSS.MS-LS2-1

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

Why does a book on a table not move?

• No forces are acting on the book

• Gravity is the only force acting on the book

• The forces of the table pushing up and gravity pulling down are balanced

In a tug of war game, the NET FORCE is 50N to the LEFT. The winning team pulled with a force of 200N to the left. How much force did the losing team pull with?

• 150N right

• 250N right

• 100N right

• 50N right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

How will this object act in response to these forces?

• The object will remain at rest.

• The object will move upward only.

• The object will move to the right only.

• The object will move upward and toward the right.

Tags

NGSS.MS-PS2-2

If the car in the diagram rolls faster and faster as it moves down the ramp, you can be sure that

• there is no friction acting on the object.

• the forces acting on it are unbalanced.

• the net force on the car is 0 N.

• only gravity is acting on the car.

Tags

NGSS.MS-PS2-2