Question

A 63.4 kg pole-vaulter falls from rest from a height of 3.7 m onto a foam-rubber pad. the pole-vaulter comes to rest 0.32 s after landing on the pad. calculate the athlete's velocity just before reaching the pad. m/s downward.

Answer 1

The athlete's velocity just before reaching the foam-rubber pad is 0 m/s downward.

Step-by-step explanation:

To calculate the athlete's velocity just before reaching the foam-rubber pad, we can use the equation:

vf = vi + at

Where:

• vf is the final velocity
• vi is the initial velocity
• a is the acceleration
• t is the time

Given that the athlete falls from rest, the initial velocity (vi) is 0 m/s. We can calculate the acceleration (a) using the equation:

a = (vf - vi) / t

Where:

• a is the acceleration
• vf is the final velocity
• vi is the initial velocity
• t is the time

Using the given values, we have:

a = (0 - 0) / 0.32

Solving for a, we find that the acceleration is 0 m/s². Therefore, the athlete's velocity just before reaching the pad is also 0 m/s.