Sample Physics Essays On Linear Motion

Homework Question on Linear Motion

  1. You are driving in a car on a long trip. At any given time [for example, 3 hours after you started the trip] how can you find: Your instantaneous velocity? Your average velocity?
  2. What is the average speed of a cyclist who travels 15 km in 30 minutes?
  3. What is the acceleration of a car moving along a straight road that increases its speed from 0 to 100 km/h in 10 seconds?
  4. What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 seconds?

Are there any specific concepts in chapter 3 that you found challenging or difficult and would like to review in class next week? Chapter 4: Newton’s 2nd Law

  1. You push horizontally on a heavy box on a level concrete floor until the box is sliding. How hard do you have to push in order to keep the box moving at a constant velocity?
  2. If the net force acting on the sliding box in the previous question is somehow tripled, what happens to its acceleration?
  3. How does the direction of acceleration compare with the direction of the net force that produces it?
  4. Are there any specific concepts in chapter 4 that you found challenging or difficult and would like to review in class next week?

Homework Answer on Linear Motion

  • You are driving in a car on a long trip. At any given time for example, 3 hours after you started the trip how can you find: Your instantaneous velocity? Your average velocity?

Instantaneous velocity is the velocity measured at a particular instance or point. In a journey, it is not easy to maintain constant velocity because of different barriers and speed control signs. Instantaneous velocity can be read from the speedometer at that particular instance.

Average velocity is calculated using the total distance (in a particular direction) covered and the total time taken in the journey. Therefore, the average speed cover in 3hour will be calculated as

Homework Help

  • What is the average speed of a cyclist who travels 15 km in 30 minutes?

Average speed is calculated as the total distance covered (in a certain direction) over the total time covered. Working with kilometers and minutes, it is appropriate to change them to meters and seconds or kilometers and hours.

= 30Km/h