481,897 views
41 votes
41 votes
A 54 kg pole vaulter falls from rest from a

height of 4.7 m onto a foam rubber pad. The
pole vaulter comes to rest 0.40 s after landing
on the pad.
a) Calculate the athlete’s velocity just before reaching the pad.
Answer in units of m/s

User Featherbits
by
2.7k points

1 Answer

15 votes
15 votes

Answer:

9.6

Step-by-step explanation:

v² = u² + 2as

v² = 0 + 2(9.81)(4.7)

v² = 92.214

v = 9.6 m/s

User Odannyc
by
3.2k points