Newtons First Law of Motion | Worksheet - Free Printable

I'll solve this matching exercise step by step, carefully checking each term and definition.

Let me work through Newton's First Law of Motion vocabulary:

Step 1: Understanding the terms
- Force
- Net force
- Balanced forces
- Unbalanced forces
- Gravity
- Friction
- Inertia
- Newton's First Law of Motion

Step 2: Matching each term to its definition

1. Force - This is a push or pull on an object. Looking at the definitions, option "k" says "any push or pull on an object." ✓

2. Net force - This is the sum of all forces acting on an object. Option "j" states "the sum of all forces acting on an object." ✓

3. Balanced forces - When all forces acting on an object create a net force greater than zero... wait, let me reconsider. Actually, balanced forces mean the forces cancel out, so there's no change in motion. Looking more carefully:
- Option "f" mentions "when all the forces acting on an object create a net force greater than zero..." - that's unbalanced forces
- Let me look for balanced forces definition

Actually, I need to match these more carefully. Let me re-read the definitions:

a. a resistance to motion that occurs when surfaces are in contact with each other = Friction

b. an attractive force that all objects exert on each other = Gravity

c. the sum of all the forces acting on an object create a net force = This seems incomplete, but likely refers to Net force

d. the tendency of an object to continue its current motion or lack of all motion = Inertia

e. states that an object at rest stays at rest and an object in motion stays in motion at the same speed and in the same direction unless acted upon by another force = Newton's First Law of Motion

f. when all the forces acting on an object create a net force greater than zero, and the object moves = Unbalanced forces

g. (not visible in my list)

h. when all the forces acting on an object create a net force equal to zero, and the object does not move = Balanced forces

i. (not visible)

j. the sum of all forces acting on an object = Net force

k. any push or pull on an object = Force

Wait, I see there might be some confusion. Let me reorganize:

Looking at the image again, I can see definitions labeled a through k. Let me match them properly:

1. Force → k (any push or pull on an object)

2. Net force → j (the sum of all forces acting on an object)

3. Balanced forces → h (when all forces acting on an object create a net force equal to zero, and the object does not move)

4. Unbalanced forces → f (when all forces acting on an object create a net force greater than zero, and the object moves)

5. Gravity → b (an attractive force that all objects exert on each other)

6. Friction → a (a resistance to motion that occurs when surfaces are in contact with each other)

7. Inertia → d (the tendency of an object to continue its current motion or lack of all motion)

8. Newton's First Law of Motion → e (states that an object at rest stays at rest and an object in motion stays in motion at the same speed and in the same direction unless acted upon by another force)

Let me verify each match one more time:
- 1-k ✓
- 2-j ✓
- 3-h ✓
- 4-f ✓
- 5-b ✓
- 6-a ✓
- 7-d ✓
- 8-e ✓

All matches check out correctly!

Final Answer:
1. Force → k
2. Net force → j
3. Balanced forces → h
4. Unbalanced forces → f
5. Gravity → b
6. Friction → a
7. Inertia → d
8. Newton's First Law of Motion → e