Difficulty: Easy
Correct Answer: True
Explanation:
Concept
The time of flight of a projectile is the total time from launch until it lands back at the original vertical level (ground). It includes the upward journey to maximum height and the downward return.
Standard formula (level ground)
Time of flight, T = &frac{2u \sin\alpha}{g}Time to reach maximum height, Tup = &frac{u \sin\alpha}{g}Time to fall back, Tdown = &frac{u \sin\alpha}{g}Thus, T = Tup + Tdown.
Common pitfall
Do not confuse time of flight with range (horizontal distance) or with time to reach maximum height (which is half of the time of flight on level ground).
Final Answer
True
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