Answer true of false for the following 1. A large force always produces a larger

Question

Answer true of false for the following

1. A large force always produces a larger impulse on a body than a smaller force.
2. If two particles of different masses have equal kinetic energy they also have equal momentum.
3. If the kinetic energy of a single particle is zero, its momentum must be zero.
4.The momentum of an isolated system is always conserved no matter what kind of force is acting inside the system.
5.The kinetic energy is always conserved both in elastic collisions and inelastic collisions.
6.If the momentum of a single particle is zero, its kinetic energy may not be zero.
The linear momentum of an object is proportional to the mass of the object.

Explanation / Answer

1). impulse = force*time so, TRUE 2). K.E. = p^2/2m ; where p =momentum so, FALSE 3). K.E. = p^2/2m =0 => p =0 TRUE 4). momentum of a system is always conserved when no external force acts on it. Internal forces may act because the net sum of internal forces is always 0. So, TRUE 5). K.E. is only conserved in elastic collision and not in inelastic collision. So, FALSE 6). p = 0 => m*v = 0 => v = 0 since mass can't be 0. K.E. = 0.5*m*v^2 = 0 so, False 7). linear momentum = m*v so, it is proportional to the mass of object. So, TRUE

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