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.

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

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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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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Motion With Multiple Parts concept. If you need more Motion With Multiple Parts practice, you can also practice Motion With Multiple Parts practice problems.

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