Question

a Women throws an object mass 500 gm with speed of 25m/sec what is the impale imparted to the object

Answer 1

Answer:  

Mass of the object (m) = 500g = 0.5 kg

Speed of the object (v) = 25 m/s

(i) Impulse imparted to the object = Change in the momentum = mv-mu

= m(v-u)

= 0.5(25-0) = 12.5 N-s

(ii) Velocity of the object after rebounding = -25/2 m/s

v’ = -12.5 m/s

Change in momentum = m(v’ - v)

= 0.5 (-12.5 -25)

= -18.75 N-s