A stone projected at angle theta with horizontal from the roof of a tall building falls on the ground after 3 second to second after the projection it was again and the level of projection then the
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TAC = 2 sec.
So,
(2u sinx)/g = 2 => u sinx = g = 10 m/s
Now,
y = uyt + 1/2 ayt2 ==>– h = u sinx × 3 -1/2 g × 32
=> –h = 10 × 3 -1/2 × 10 × 9
=> – h = 30 – 45
=> h = 45 – 30 = 15 m
So,
(2u sinx)/g = 2 => u sinx = g = 10 m/s
Now,
y = uyt + 1/2 ayt2 ==>– h = u sinx × 3 -1/2 g × 32
=> –h = 10 × 3 -1/2 × 10 × 9
=> – h = 30 – 45
=> h = 45 – 30 = 15 m
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