Sunday

January 25, 2015

January 25, 2015

Posted by **Sarah** on Wednesday, May 9, 2012 at 9:20pm.

A) calculate the athlete's velocity just before reaching the pad

B) calculate the constant force exerted on the pole vaulter due to the collision

- Physics -
**Damon**, Wednesday, May 9, 2012 at 9:47pmsame as the last problem but you need initial velocity to get initial momentum

v = Vi - g t

v = 0 - g t so t = v/g

h = Hi + Vi t - (1/2) g t^2

0 = 5 + 0 t - (g/2) t^2

0 = 5 - (g/2)(v^2/g^2)

10 = v^2/g

v^2 = 10 g = 98

or use energy

(1/2) m v^2 = m g h

v^2 = 2 g h = 10 g = 98

**Answer this Question**

**Related Questions**

Physics - A 59 kg pole-vaulter falls from rest from a height of 5.5 m onto a ...

physics - A 85 kg pole-vaulter falls from rest from a height of 6.4 m onto a ...

Physics - A 57.8 kg pole-vaulter falls from rest from a height of 5.4 m onto a ...

physics - please help i cannot figure this out A 0.27 kg ball of dough is thrown...

Physical science - A 50 kg pole vaulter falls from rest from a height of 5 ...

physics please help me - The pole vault landing pad at an Olympic competition ...

physics help - The pole vault landing pad at an Olympic competition contains ...

please help dont know how to solve - The pole vault landing pad at an Olympic ...

physics - The pole vault landing pad at an Olympic competition contains what is ...

physics - The pole vault landing pad at an Olympic competition contains what is ...