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Science TNSB Mentoring
Class 10
Laws of motion
Mass and Weight
3.
Law of conservation of momentum
Question:
2
m.
Choose the best answer:
1
.
If the Earth shrinks to 50% of its real radius its mass remaining the same, the weight of a body on the Earth will __________.
decrease by \(50\%\)
increase by \(50\%\)
decrease by \(25\%\)
increase by \(300\%\)
2
.
The law of conservation of linear momentum is valid when
no net external force acts on the system
velocities are zero
external force acts on the system
only one body is present
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