University:
College Entrance Preparation
Course:
ACT Preparation (Science)
Academic year:

2019
Views:

74

Pages:

3
Author:

Dixie Summers

Work Hard - Get Smart - No Excuses **INTRODUCTION TO NET FORCES!!** A force is a PUSH or a PULL An unbalanced force CAUSES A CHANGE IN MOTION or DIRECTION! A balanced force HAS NO MOTION. It has a net force of 0 N The UNIT for force is the NEWTON. It is abbreviated N. **NET FORCE = COMBINATION OF ALL FORCES ACTING ON AN OBJECT** **ARROWS IN SAME DIRECTION ADD THEM** 10 N + 10 N ------------ Total NET Force = 20 N **UNBALANCED** [Image of an apple with an arrow pointing right] 5 N + 5 N ------------ Total NET Force = 10 N **UNBALANCED** [Image of a soccer ball with an arrow pointing right] 7 N - 10 N ------------ Total NET Force = 3 N **UNBALANCED** [Image of a book with an arrow pointing left] 36 N - 12 N ------------ Total NET Force = 27 N **UNBALANCED** [Image of a shopping cart with an arrow pointing right] Net Force Worksheet Name: Period: The force that results from all the combined forces acting on the object is called the net force. Calculate the net force acting on the box in the following problems. Be sure to include the direction of the net force (left or right). 1. 4N ← Net Force: 4N ← UNBALANCED 2. 7N → 5N ← 2N Net Force: 1-2 ← UNBALANCED 3. 4N ← 4N → Net Force: 0 N NO MOTION BALANCED 4. 6N → 3N ← Net Force: 3N → UNBALANCED 5. 8N → 4N ← Net Force: 4N → UNBALANCED 6. 4N ← 5N → Net Force: 1N ← UNBALANCED 7. 3N ← Net Force: 3N ← UNBALANCED 8. 2N → 4N → 5N ← Net Force: 6-5 → 1N → UNBALANCED 9. 6N → 3N ← Net Force: 3N → UNBALANCED 10. 7N → 4N ← 3N ← Net Force: 11N → UNBALANCED