Question : If a ball is thrown vertically upwards with speed 𝑢, the distance covered during the last 𝑡 seconds of its ascent is
(A) \dfrac{1}{2}gt^{2}
(B) ut-\dfrac{1}{2}gt^{2}
(C) \left( U-gt\right) t
(D) 𝑢𝑡
Answer : option (A)
Solution :
If a ball is thrown vertically upwards with speed 𝑢, the distance covered during the last 𝑡 seconds of its ascent is
with
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