Real-Life Examples of Uniform Motion

📚 Quick Study Guide

• 📏 Definition: Uniform motion, also known as constant velocity, occurs when an object moves in a straight line at a constant speed. This means its velocity remains unchanged throughout the motion.
• ⏱️ Key Characteristics:
  • ➡️ Constant Velocity: Both speed and direction remain the same.
  • 🛤️ Straight-Line Path: The object moves along a straight line.
  • Acceleration: The acceleration is zero.
• ➕ Formulas:
  • 📏 Average Velocity: $v = \frac{\Delta x}{\Delta t}$, where $\Delta x$ is the displacement and $\Delta t$ is the time interval.
  • ⏱️ Displacement: $\Delta x = v \Delta t$
• 💡 Important Notes:
  • ⚠️ Uniform motion is an idealization. In the real world, perfectly uniform motion is rare due to factors like friction and air resistance.
  • 📐 Vectors: Velocity is a vector quantity, so direction matters!

🧪 Practice Quiz

1. A car is traveling on a straight highway at a constant speed of 80 km/h. What is the car's acceleration?
   1. 20 m/s²
   2. 9.8 m/s²
   3. 0 m/s²
   4. -9.8 m/s²
2. A train moves along a straight track at a constant speed of 120 km/h. How far will it travel in 1.5 hours?
   1. 60 km
   2. 80 km
   3. 180 km
   4. 200 km
3. A bicycle travels at a constant velocity of 5 m/s eastward. What is its displacement after 10 seconds?
   1. 2 m West
   2. 5 m West
   3. 50 m East
   4. 20 m East
4. Which of the following scenarios BEST describes uniform motion?
   1. A car accelerating from a stop sign.
   2. A ball thrown upwards into the air.
   3. An elevator moving at a constant speed between floors.
   4. A rocket launching into space.
5. A runner completes a 100-meter dash at a constant speed of 10 m/s. How long did it take?
   1. 5 seconds
   2. 10 seconds
   3. 15 seconds
   4. 20 seconds
6. An object maintains a constant velocity of 25 m/s in a straight line. What is its average velocity over any time interval?
   1. 0 m/s
   2. 5 m/s
   3. 12.5 m/s
   4. 25 m/s
7. A conveyor belt moves packages along a straight path at a constant speed of 2 m/s. How far will a package travel in 30 seconds?
   1. 15 meters
   2. 32 meters
   3. 60 meters
   4. 90 meters