Everyday Examples of Pushing Things That Make Them Move Away

📚 Quick Study Guide

• 🍎 Newton's Third Law: For every action, there is an equal and opposite reaction. When you push something, it pushes back on you with the same force.
• ➡️ Force: A push or pull that can cause an object to accelerate. Measured in Newtons (N).
• 🏋️‍♀️ Applied Force: The force exerted by a person or object on another object.
• 💨 Friction: A force that opposes motion when two surfaces are in contact.
• 📐 Net Force: The vector sum of all forces acting on an object. If the net force is non-zero, the object will accelerate ($F = ma$).
• 🚗 Momentum: A measure of mass in motion ($p = mv$). Changes in momentum result from forces acting over time.
• 💡 Impulse: The change in momentum of an object ($J = \Delta p = F \Delta t$).

🧪 Practice Quiz

1. Which of Newton's Laws best explains why an object moves away when you push it?
   1. A) Newton's First Law
   2. B) Newton's Second Law
   3. C) Newton's Third Law
   4. D) Newton's Law of Universal Gravitation
2. What force opposes the motion of a box being pushed across the floor?
   1. A) Applied Force
   2. B) Gravitational Force
   3. C) Frictional Force
   4. D) Normal Force
3. What is the formula for calculating momentum (p)?
   1. A) $p = F/a$
   2. B) $p = mv$
   3. C) $p = \frac{1}{2}mv^2$
   4. D) $p = ma$
4. If you push a heavier box with the same force as a lighter box, what will happen?
   1. A) The heavier box will accelerate more.
   2. B) The lighter box will accelerate less.
   3. C) Both boxes will accelerate equally.
   4. D) The lighter box will accelerate more.
5. What is the net force if you push a box with 20N of force and friction opposes with 5N?
   1. A) 5N
   2. B) 15N
   3. C) 20N
   4. D) 25N
6. What term describes the change in momentum of an object?
   1. A) Force
   2. B) Energy
   3. C) Impulse
   4. D) Work
7. According to Newton's Third Law, if you push on a wall, what does the wall do?
   1. A) Nothing
   2. B) Pushes back on you with equal force
   3. C) Absorbs the force
   4. D) Moves away from you