Relations between Angle of Launch, Range & Flight Time

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SUMMARY

The relationship between the angle of launch (θ), range, and flight time for projectiles is defined by the equations ΔX = vcosθ * t and d = vt. As the angle θ increases from 0, the range initially increases, reaches a maximum, and then decreases. The time of flight (T) can be calculated by determining the time to reach maximum height and doubling it. This analysis allows for a clear understanding of how launch angle affects both range and flight duration.

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Temper888
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1. How do angle of launch, range, and flight time relate to one each other?



2.ΔX=vcosθ*t



3. According to the equation above,in my opinion as θ increases, range should decrease and time(t) should increase. Is there any other way of knowing the relation?
 
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Temper888 said:
3. According to the equation above,in my opinion as θ increases, range should decrease and time(t) should increase. Is there any other way of knowing the relation?


Actually as θ increase from 0, range first increase and then decrease

you can find the relation b/w range in θ this way:

Assume projectile launched at angle θ and speed u from horizontal
first find time for projectile to reach max height, do this by using Newton's first eqn ...
now double it, you get time of flight T

not for this time use simply d=vt in X direction, you get range, now you can substitute for u from any 1 eqn into another, and you get the required relation b/w angle of launch, range, and flight time
 

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