Newton's Laws and Forces

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📚 Part 1: Understanding Forces

1. When two students pull a rope with equal force in opposite directions, what happens to the rope?

The rope moves towards the stronger student

The rope stays still

The rope moves back and forth

The rope breaks

2. Which of the following are examples of balanced forces? (Tick all that apply)

A book sitting on a table

A ball rolling down a hill

A tractor parked in a paddock

A wheelbarrow being pushed across a farm

3. According to Newton's First Law, an object at rest will:

Always start moving after a few minutes

Stay at rest unless acted upon by an unbalanced force

Move slowly in any direction

Only move if pushed very hard

4. If one student pulls a rope with 50N of force to the right, and another pulls with 30N to the left, what is the net force?

80N to the right

20N to the right

20N to the left

0N (balanced)

✏️ Part 2: Applying Newton's Laws

5. Sketch and label the forces acting on a stationary tractor in a paddock. Are the forces balanced or unbalanced? Explain your answer.

6. Explain why a ball rolling on grass eventually stops, even though Newton's First Law says it should keep moving.

7. Describe a real-life situation from your environment where an object demonstrates inertia (Newton's First Law). Explain what forces would be needed to change its motion.

8. Complete the following sentence:

When forces acting on an object are balanced, the object will _______________. When forces are unbalanced, the object will _______________.

🔬 Part 3: Problem Solving

9. Two farmers are moving a hay bale. Farmer A pushes with 40N of force, and Farmer B pushes with 35N in the same direction. What is the total force acting on the hay bale? Will it move?

10. A farm dog is pulling on a stick with 25N of force. You pull back with exactly 25N of force. Describe what happens and explain why, using the correct scientific terms.