Physics Moment & Momentum Test Package
Dive deep into the wonders of the universe with our meticulously crafted "Physics Moment & Momentum Test"! This comprehensive assessment is not just a test—it's a journey through the intricacies of forces and the laws that govern motion.
*What's Insi...
1. Read all instructions and information thoroughly in each questions!
2. Any suspicious behavior will result in cheating assumptions and score of 0 (zero)
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To zoom out the screen : press CTRL and - at the same time
4. Use the translator tool for the difficult term
5. You are allowed to use the drawing tool on the menu to answer question, save to the question to attach
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7. You may start to submit at the last 5 minutes before the test ends
1.
Which of the following statement will have the minimum momentum?
A ball moved downhill
Landslide
Box that was released 100 m above ground
Car which leak of fuel and almost stop
Correct answer. 4/4p
2.
Alexa (50 kg) and Max (30 kg) play see-saw on the playground. Alexa has to move closer to the pivot by 20 cm to make the see-saw balance.
Based on this condition, which factor is affecting the balance?
mass
distance
length
direction
Correct answer. 4/4p
3.
Jody whose mass is 40 kg, sat on the left side of a see-saw while Ben whose mass is 45 kg, sat on the right. If both sat at the same distance
from the pivot, to what direction will the see-saw move?
clockwise
anticlockwise
in a balance
Correct answer. 4/4p
1/6
, 4.
a) Please use the following information to answer questions a-b!
Viny pushes a 10 kg trolley and can make it move with a velocity of 3.6 m/s. Then it collides with another trolley which is at rest. The
mass of the trolley at rest is 8 kg. Both trolleys are moving together after the collision.
What is the momentum of the trolley that Viny pushes?
Answer:
momentum of Viny's trolly = mass x velocity = 10kg x 3.6 m/s
= 36 kg m/s
The momentum of the trolly that viny pushes is 36 kg m/s
31 words
Correct answer. 4/4p
b) What is the velocity of both trolley after collision?
Answer:
before collision
momentum of trolly a= mass x velocity = 10kg x 3.6 m/s = 36 kg m/s
momentum of trolly b- mass x velocity = 8kg x 0 m/s = 0 kg m/s
total momentum before = 36 kg m/s
momentum before collision = momentum after collision
total momentum before = (mass 1 + mass 2) . vf
36 kg m/s = (10 kg + 8 kg) . vf
36 kg m/s = 18 kg .vf
vf = 36 kg m/s
--------------
18 kg
vf = 2 m/s
So both trolly's velocity is 2 m/s
93 words
Correct answer. 4/4p
2/6
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