8/17/2019 FIZIK SPM

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1. Diagram 3.3 shows a pole vaulter performing a jump.

Using appropriate physics concepts, explain the use of suitable equipment and techniques to improve his performance. our answer include the following aspects!"i# $aulter%s attire"ii# $aulter%s movement"iii# &ole used

"iv# 'afety(1)

mar*s+

. 'piderman heard a loud sound when he jumped down on to a woodenplatform without bending his legs as shown in Diagram -.1.e repeated the action "at the same height# but bend his legs while

landingand heard a soft sound while landing on the same platform as shown inDiagram -../he 'piderman experienced a change of momentum in both situations

and he too* shorter time to complete his action when he landed withoutbending his legs.

Soft landing sound

  Loud landing sound

"i# 0hat is meant by momentum(1 mar*+

"ii# Using Diagram -.1 and -., compare the change of momentums experiencedbythe 'piderman. 2elate the time for change of momentum and the force actingon the 'piderman, Deduce a relevant physics concept. ( mar*s+