Motion In Two And Three Dimensions

Step 1: Use the equation for free fall
Since the stone is thrown horizontally, its initial vertical velocity is zero. The time taken to reach the ground is determined only by the vertical motion. We can use the equation for free fall to find the time: where: - is the height of the tower, - is the acceleration due to gravity ( ), - is the time taken to fall.
Step 2: Rearrange and solve for
Substitute the given values into the equation:
Answer:
Therefore, the time taken by the stone to reach the ground is approximately . So, the correct answer is option (2).