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`        A particle is thrown upward from the ground. It experiences a constant air resistance which can produce a retardation of 2m/sec2 opposite to the direction of the velocity of a particle. The ratio of time of ascent to the time of descent  is {take g=10m/sec2}`
2 years ago

Gowtham
40 Points
```							time of flight is 2h/gtime of ascent is h/g and time of descent is h/g for a normal journey if air resistant is consideredduring time of ascent both resistance and gravity acts downwardsso time of ascent is h/(g+a)durind descent the air resistance acts upwards and gravity acts downwardsso time of descent is h/(g-a)sothe time of ascent/time of descent is g-a/g+aso ta/td=10-2/10+2            =8/12            =2/3
```
2 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