Human reaction time is usually about 0.18 s. If your lab partner holds a ruler between your finger and thumb and releases it from rest without warning, how far can you expect the ruler to fall before you catch it? (a = -g = -9.81 m/s .) - 0.32 m ⊝ - 0.88 m ⊝ - 0.16 m ⊝ - 0.09 m ⊝ CLEAR ALL ❮ PREVIOUS

–0.16 m

Explanation:

From the question given above, the following data were obtained:

Time (t) = 0.18 s

Acceleration due to gravity (g) = –9.81 m/s²

Height (h) =?

We can obtain how far the ruler will fall by using the following equation:

H = ½gt²

H = ½ × –9.81 × 0.18²

H = ½ × –9.81 × 0.0324

H = –0.16 m

Thus, the ruler will fall –0.16 m before you will catch it.

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