A woman throws an object of mass 500 g with a speed of 25 m s1.

(a) What is the impulse imparted to the object?

(b) If the object hits a wall and rebounds with half the original speed, what is the change in momentum of the object?

<p><span lang="EN-IN">This is a Short Answer type Questions as classified in NCERT Exemplar</span></p><p><strong><span lang="EN-IN">Explanation-</span></strong><span lang="EN-IN"> mass of the objects =0.5kg</span></p><p><span lang="EN-IN">Speed of the objects =25m/s</span></p><p><span lang="EN-IN">a) impulse imparted = change in momentum = mv-mu</span></p><p><span lang="EN-IN">= m (v-u)= 0.5 (25-0)=12.5N-s</span></p><p><span lang="EN-IN">b) velocity of the object after rebounding= 25/2=-12.5m/s</span></p><p><span lang="EN-IN">change in momentum = m (v-u)= 0.5 (-12.5-25)= -18.75N-s</span></p>

0 Upvotes 0 Upvotes 0 Downvotes

• • Report Abuse
• Comment