That's not enough information. You need some additional information to calculate the mass.
momentum = mass x velocity => mass = momentum / velocity
To get the potential energy when only the mass and velocity time has been given, simply multiply mass and the velocity time given.
You can't. The mass is irrelevant to velocity. You need the distance.
You cannot. Force = Mass*Acceleration or Mass*Rate of change of Velocity.
You can't. Acceleration is change in velocity. If given a constant velocity, the acceleration is zero.
Impluse = m x v
1/2mv^2 = mgh
If you have the mass, you can find the acceleration from Newton's Second Law, a=F/m where a is the acceleration, m is the mass, and F is the force. Then the velocity is given by the standard formula v=vo+at where v is the final velocity, vo the velocity at t=0, probably 0 in your case. If so v=at.
the final velocity assuming that the mass is falling and that air resistance can be ignored but it is acceleration not mass that is important (can be gravity) final velocity is = ( (starting velocity)2 x 2 x acceleration x height )0.5
Momentum alone cannot find the mass of an object as momentum is given by p = mv. To find mass m = p/v , velocity is also required.
Force equals mass times acceleration.
Force equals the mass times the rate of change of the velocity.