Newton's Laws

🧠 A) Identify the Law

Write 1st, 2nd, or 3rd Law and justify:

1. A passenger moves forward when a car suddenly stops. ___

2. A rocket moves upward by pushing gases downward. ___

3. A heavier object requires more force to accelerate. ___

4. A book stays still on a table. ___

🔄 B) Analyze Forces

A box is pushed with 30 N and friction is 10 N.

1. What is the net force?

2. Is the object accelerating?

3. In which direction?

⚡ C) Apply F=ma

1. A 5 kg object is pushed with 20 N.
   → Acceleration = ______

2. A 10 kg object accelerates at 3 m/s²
   → Force = ______

3. Two objects receive the same force.
   Which accelerates more? Explain.

🧠 D) Compare Situations

Case A: 10 N force on 2 kg
Case B: 10 N force on 5 kg

1. Which has greater acceleration?

2. Why?

🔍 E) Real-World Interpretation

Explain:

1. Why is it harder to stop a moving truck than a bicycle?

2. Why do we lean forward when a bus brakes?

🧩 F) Multi-Step Problem

A 4 kg object is pushed with 25 N. Friction is 5 N.

1. Net force = ______

2. Acceleration = ______

3. Does the result make sense? Why?

🔥 G) Challenge

A student says:

“If there is motion, there must always be force.”

1. Do you agree? Yes / No

2. Explain using Newton’s laws.