When a rocket expels fuel ............................
Week 10:D2: Momentum in complex systems.

Quiz
•
Physics
•
11th Grade
•
Medium
Amira Saleh
Used 6+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
it gains mass and gains velocity.
it loses mass and loses velocity.
it loses mass but gains velocity.
it gains mass but loses velocity.
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The expelled fuel carries .............
momentum in opposite direction, while the rocket gains momentum in the same direction.
momentum in one direction, and the rocket gains momentum in the same direction.
momentum in one direction, while the rocket gains momentum in the opposite direction.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
According to the law of conservation of momentum, the total momentum of the system ........................... must remain .....................
(rocket only ), constant
(rocket + expelled fuel), constant
(rocket + expelled fuel + gasses ), constant
( expelled fuel only ), constant
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
As the rocket burns fuel and expels it ......... at high velocity, the rocket moves .............
Forward, forward.
backward, backward
forward, backward,
backward, forward.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The momentum .........by the fuel is exactly matched by the momentum .............. by the rocket
lost, gained
gained, gained
lost, lost
gained, lost
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Even though the rocket’s mass ............, its velocity ................. to maintain .................momentum in the absence of external forces.
decreases, constant, constant
increases , increases, constant
decreases, increases, constant
constant, increases, constant
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
If the rocket initial mass is 1500 kg (including fuel) in deep space, and it expels fuel at a rate of 5 kg/s , and the rocket is initially moving at 10 m/s. What is the mass of the fuel.
2 kg
150 kg
0.5 kg
50 kg
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