Rajah menunjukkan seorang atlet sedang melakukan lompat tinggi.
What is the function of the mattress?
Apakah fungsi tilam itu?
A To reduce the collision time between the athlete and the mattress
Mengurangkan masa perlanggaran atlet itu dengana tilam
B To reduce the change of momentum of the athlete when he hits the mattress
Mengurangkan perubahan momentum atlet semasa kena tilam
C To reduce the impulsive force acting on the athlete when he hits the mattress.
Mengurangkan daya impuls yang bertindak ke atas atlet semasa kena tilam
Answer : C
Impulse force= change of momentum
time taken
When time taken increases, impulse force decrease