Forces Assignment

What is Newton's Third Law of Motion?

• For every action, there is an equal and opposite reaction.

• An object at rest stays at rest unless acted upon by a force.

• Force equals mass times acceleration.

• The net force on an object is the sum of all forces acting on it.

Tags

NGSS.MS-PS2-1

Which of the following is a non-contact force?

• Friction

• Applied force

• Normal force

• Gravity

Tags

NGSS.MS-PS2-5

What happens when forces are balanced?

• The object accelerates.

• The object changes direction.

• The net force is zero.

• The object speeds up.

Which force opposes the motion of objects sliding against each other?

• Gravity

• Magnetism

• Friction

• Normal force

What determines whether an object will move or stay still?

• The type of force acting on it.

• The net force acting on it.

• The speed of the object.

• The direction of the force.

Tags

NGSS.MS-PS2-2

​ (a)   is a push or pull between two objects that are​ ​ (b)   , but ​a (c)   is a push or pull ​ (d)   .

• Contact force
• touching
• Non-contact force
• without touching
• colliding

Tags

NGSS.MS-PS2-5

Determine whether each scenario is a BALANCED or UNBALANCED force.

Groups:

(a) BALANCED

,

(b) UNBALANCED

• 
• Object will move or change direction.

• 
• Object will remain at rest.

• Net Force greater than 0 N.

• 
• 
• Net Force equals 0 N.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Organize these scenarios into the right categories of CONTACT forces.

Groups:

(a) Applied Force

,

(b) Friction

,

(c) Normal Force

• A remote sitting on a table

• A bat hitting a ball

• A chromebook resting on a desk

• A woman pushing a lawnmower

• Brakes rubbing against a tire

• Sliding a book across a table

The strength of gravity on an object depends on the object's​ (a)   .

• mass
• weight
• size

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which is EASY to you?

• Calculating Net Force

• Remembering the different types of forces

Tags

NGSS.MS-PS2-2