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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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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