Apole-vaulter is nearly motionless as he clears the bar, set 4.2 m above the ground. he then falls onto a thick pad. the top of the pad is 80 cm above the ground, and it compresses by 50 cm as he comes to rest. what is the magnitude of his accelerations he comes to rest on the pad

The magnitude of his accelerations on the pad is 66.64 m/s²

Acceleration is rate of change of velocity.

a = acceleration ( m/s² )

v = final velocity ( m/s )

u = initial velocity ( m/s )

t = time taken ( s )

d = distance ( m )

Let us now tackle the problem!

Given:

height of pole vaulter above the pad = H = 4.2 - 0.8 = 3.4 m

distance of compression of pad = d = 50 cm = 0.5 m

Unknown:

a = ?

Solution:

Firstly , we calculate the velocity of pole-vaulter before hitting the pad.

Next , we can calculate the magnitude of his accelerations on the pad.

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle

he kicked it 10 feet straight up into the air? i think this works.

talk back to him about the sport and show him your expertise or leave the room