Cross country skier moves 32 m west word than 54 m east word and finally 68 m westward what is the distance moved?

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

Which best represents the law of conservation of mass ?

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).