The uniform cylinder A has a radius R and rolls without slipping on the horizontal surface. What is the angular acceleration of the cylinder in terms of the acceleration of weight B

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

It is really hard for me right know

70 give a real life example showing how sensory neurons work with the motor neurons