Newton's Second Law Quiz with Answers: Test Your Understanding

📚 Quick Study Guide

🔍 Newton's Second Law: Describes the relationship between force, mass, and acceleration. 🍎 Formula: The formula is expressed as $F = ma$, where:
• $F$ represents the net force acting on the object (measured in Newtons, N).
• $m$ represents the mass of the object (measured in kilograms, kg).
• $a$ represents the acceleration of the object (measured in meters per second squared, m/s²).
💡 Key Points:
• Force and acceleration are vectors, meaning they have both magnitude and direction.
• The direction of the acceleration is the same as the direction of the net force.
• If the net force is zero, the acceleration is zero (the object remains at rest or continues to move at a constant velocity).
📐 Units: Remember to use consistent units (SI units are preferred) to get accurate results. ✍️ Applications: Newton's Second Law is used to analyze the motion of objects in various situations, from simple projectile motion to complex systems involving multiple forces.

🧪 Practice Quiz

1. A 2 kg object accelerates at 5 m/s². What is the net force acting on it?
   1. 5 N
   2. 2.5 N
   3. 10 N
   4. 7 N
2. If a net force of 20 N is applied to an object and it accelerates at 4 m/s², what is the mass of the object?
   1. 5 kg
   2. 80 kg
   3. 16 kg
   4. 24 kg
3. An object with a mass of 3 kg has a net force of 15 N applied to it. What is the acceleration of the object?
   1. 3 m/s²
   2. 5 m/s²
   3. 12 m/s²
   4. 18 m/s²
4. A car with a mass of 1000 kg accelerates from rest to 20 m/s in 5 seconds. What is the net force acting on the car?
   1. 2000 N
   2. 4000 N
   3. 5000 N
   4. 10000 N
5. If the net force on an object is doubled, what happens to its acceleration?
   1. It is halved.
   2. It remains the same.
   3. It is doubled.
   4. It is quadrupled.
6. A 5 kg box is pushed with a force of 25 N. If the frictional force is 5 N, what is the acceleration of the box?
   1. 4 m/s²
   2. 5 m/s²
   3. 6 m/s²
   4. 7 m/s²
7. What are the correct units for Force, Mass, and Acceleration in the SI system?
   1. kg, m/s², N
   2. N, kg, m/s²
   3. m/s², N, kg
   4. N, m/s², kg