What is the momentum of a man of mass 100 kg when he walks with a uniform velocity of 2 m/s?
200 kg m/s
200 N
100 kg m/s
None of these
Equation for momentum =
The resultant of action and reaction forces is _______.
Greater than zero
Less than zero
Zero
If the gravitational force acting on a body is nullified by another force ,the resultant force becomes
Maximum
Minimum
Unit of momentum in S.I system is
gm x cm/sec
kg m/sec
sec/m/kg
kg/m
When a bus or train stops suddenly, a person siting inside tends to fall forward, due to
Inertia of rest
Inertia of motion
Inertia of direction
All the above
According to Newton’s second law of motion: Force, F =
ma
m / a
ma2
2ma2
________of a body is defined as the product of its mass (m) and its velocity (v).
Momentum
Velocity
Acceleration
Jet aeroplanes work on the principle of
First law of motion
Second law of motion
Third law of motion
Applying a force on the body with physical contact and this force is called
Magnetic force
Mechanical force
Gravitational force