Identifying Balanced and Unbalanced Forces (Grade 3)

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Identifying Balanced and Unbalanced Forces

Instructions: An object at rest is not moving. But, it still has forces acting on it! The strengths and directions of the forces acting on the object cancel out. If you added up the forces they would equal zero. These are called balanced forces. When an object is moving, it has unbalanced forces acting on it. When unbalanced forces act on an object it may change speed or move in a different direction.

Decide if the forces acting on each object are balanced or unbalanced.

1. 
The boy is pulling on a heavy wagon. The wagon does not move.
Pulling Force 3
Are the forces acting on the wagon balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
2. 
The children are playing tug of war. They both pull on the rope. The rope moves to the left.
Pulling Force 1
Are the forces acting on the rope balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
3. 
The soccer ball is on the ground. It is not moving.
Soccer Ball
Are the forces acting on the ball balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
4. 
A boy kicks a soccer ball. The ball rolls away from him.
Pushing Force 4
Are the forces acting on the ball balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
5. 
The dog is pulling on the leash. The boy is also pulling on the leash. Neither the dog or the boy move.
Pulling Force 2
Are the forces acting on the leash balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
6. 
Quinn accidentally drops his glass of cider. Gravity pulls the glass toward the floor.
Fall - Hot Cider - Small
Are the forces acting on the glass balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
7. 
The boy pushes the door. The door moves.
Pushing Force 2
Are the forces acting on the door balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
8. 
The children are playing tug of war. They both pull on the rope, but the rope does not move.
Pulling Force 1
Are the forces acting on the rope balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
9. 
An apple falls off a tree. The force of gravity pulls the apple down toward the ground.
Summer - Tree
Are the forces acting on the apple balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces
10. 
The woman pushes the shopping cart. The cart rolls forward.
Pushing Force 3
Are the forces acting on the cart balanced or unbalanced?
  1. balanced forces
  2. unbalanced forces

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