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A car starts from rest and accelerates at uniform rate of 6 metres per second square for some time then moves at constant speed for sometime and retards is the same winform rate and the total time for the journey is 24 seconds and average speed for journey is 20 metres per second how long does the car move with constant speed

```
4 years ago

Vikas TU
14146 Points
```							x1 = 0 + 0.5*6t1^2......................(1)x2 = (6*t1)*t2..............(2) {at constant speed}x3 = (6*t1)t3 – 0.5*6*t3^2...............(3) {During retardation} t1 + t2 + t3 = 24...............(4)avg. speed = total distance / total time => (x1 + x2 + x3)/24 = 20 ….....................(5)solve all the eqns. and get each values.
```
4 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions