SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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kg m s
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kg m s2
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kg m/s
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kg m/s2
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Detailed explanation-1: -The kilogram-meter per second (kg · m/s or kg · m · s-1 ) is the standard unit of momentum . Reduced to base units in the International System of Units ( SI ), a kilogram-meter per second is the equivalent of a newton-second (N · s), which is the SI unit of impulse.
Detailed explanation-2: -Momentum is the quantity of motion of a moving body. It is expressed mathematically as p = m * v and has units of kg m/s.
Detailed explanation-3: -The unit of momentum is the product of the units of mass and velocity. In SI units, if the mass is in kilograms and the velocity is in meters per second then the momentum is in kilogram meters per second (kgm/s).
Detailed explanation-4: -Definition. A newton is defined as 1 kg⋅m/s2 (it is a derived unit which is defined in terms of the SI base units). One newton is therefore the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force.