2.
|
Diagram
2.1 shows a boy of mass 50 kg standing on a stationary skateboard of mass 2.5
kg. He then jumps off from skateboard with a velocity of 2 m s-1
and caused the skateboard moves to the left as shown in Diagram 2.2.
Rajah 2. 1 menunjukkan seorang budak
berjisim 50 kg berdiri di atas papan luncur berjisim 2. 5 kg yang pegun.
Budak itu kemudiannya melompat dari papan luncur dengan halaju 2 m s-1
dan menyebabkan papan Juncur bergerak ke kiri seperti dalam Rajah 2. 2.
Diagram 2.1 Diagram
2.2
Rajah 2.1 Rajah 2.2
|
|
|
(a)
|
What is meant
by momentum?
Apakah yang dimaksudkan dengan momentum?
………………………………………………………………………………………….[1
mark / 1 markah]
|
|
(b)
|
State the concept shown in the diagram
above? Circle the correct answer.
Nyatakan konsep yang terlibat dalam rajah
di atas? Bulatkan jawapan yang betul.
Elastic
Collision / Inelastic Collision / Explosion
Perlanggaran Kenyal / Perlanggaran Tak
Kenyal / Letupan
[1 marks
/ 1 markah]
|
|
(c)
|
Calculate
the velocity of the skateboard after the boy jumps off.
Hitungkan halaju papan luncur selepas budak
itu melompat turun.
……………………………………………………………………………………………………….[2
marks / 2 markah]
|
|
d)
|
State the Physics Law involved in the
diagram above?
Nyatakan Hukum Fizik yang terlibat dalam rajah di atas?
……………………………………………………………………………………… [1 marks / 1 markah]
JAWAPAN :
a) Product of mass and velocity
b) Explosion
c) 0=2.5v - 50(2)
v= 100/2.5 ms-1
v= 40 ms-1
d) Hukum Gerakan Newton ke 3
|
Soalan Fizik beserta jawapan untuk rujukan guru dan pelajar. Dikumpul dan dimurnikan oleh Cikgu Nor Sahidah Hamid dari SMK Tambun, Ipoh.
14.5.19
2A5m - letupan (mengira halaju skateboard), Hukum Gerakan Newton ke 3
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