With the use of motion under the gravity formula, It will take 2.45 seconds for the ball to hit the ground.
Linear motion involves the movement of a body in a straight line. It can be horizontal motion or vertical motion which is also known as motion under gravity.
Given that a ball is dropped from the top of a tall building of height h = 29.47 m. To know how long it take the ball to hit the ground if acceleration due to gravity is to be 9.81m/s² and we neglect air resistance, we will make use of the formula below
h = ut + 1/2gt²
Since the ball is dropped from the top of a tall building, u = 0
29.47 = 1/2 × 9.81 × t²
29.47 = 4.905t²
t² = 29.47 / 4.905
t² = 6.008
t = √6.008
t = 2.45 s
Therefore, it take 2.45 seconds for the ball to hit the ground.
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