Conservation of momentum in a collision between particles can be understood from

(a) Conservation of energy.

(b) Newton’s first law only.

(c) Newton’s second law only.

(d) Both Newton’s second and third law.

<p>This is a Multiple Choice Questions type Questions as classified in NCERT Exemplar</p><p><strong>Answer- d</strong></p><p><strong>Explanation</strong>-we know that for a system F_ext=dp/dt</p><p>If F_ext=0, dp =0, </p><p>P = constant</p><p>Hence, momentum of a system will remain conserve if external force on the system is zero.</p><p>In case of collision between particles, equal and opposite forces will act on individual particles by newton's third law.</p><p>according to newton's 2^nd law F=dp/dt</p><p>If F =0 then p = constant so momentum remains constant if external force is zero.</p>

0 Upvotes 0 Upvotes 0 Downvotes

• • Report Abuse
• Comment