Kinematics Equations Video Lessons

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Problem: A car starts from rest at a red light at t = 0 and accelerates at 2 m/s  2 for 10 s, then travels at constant speed for 10 s, accelerates (decelerates) at -1 m/s2 until it reaches zero velocity and stops.  [a] Plot the velocity of the car versus time from t = 0 s until it stops. [b] Find the average acceleration between t = 0 and t = 20 s. [c] Find the displacement of the car from start to stop. [d] Find the average velocity of the car for the entire trip from start to stop.

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Problem Details

A car starts from rest at a red light at t = 0 and accelerates at 2 m/s  for 10 s, then travels at constant speed for 10 s, accelerates (decelerates) at -1 m/s2 until it reaches zero velocity and stops. 

[a] Plot the velocity of the car versus time from t = 0 s until it stops.

[b] Find the average acceleration between t = 0 and t = 20 s.

[c] Find the displacement of the car from start to stop.

[d] Find the average velocity of the car for the entire trip from start to stop.

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Our tutors have indicated that to solve this problem you will need to apply the Kinematics Equations concept. You can view video lessons to learn Kinematics Equations. Or if you need more Kinematics Equations practice, you can also practice Kinematics Equations practice problems.

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Based on our data, we think this problem is relevant for Professor Chapagain's class at FIU.