A $$20$$ gm bullet is shot horizontally and collides with a $$1.98$$ kg block of wood. The bullet embeds in the block and the block slides along a rough horizontal surface for $$1.5$$ m. If the coefficient of kinetic friction between the block and surface is $$0.4$$, the original speed of the bullet is

Question

Infinity Learn · Accepted Answer

by consrvation of linear momentum $$mv=(m+M)V$$ $$20x10-3v=(0.02+1.98)V$$ $$V=10-2v$$ stoping distance $$S=$$ $$V22a$$ here $$a=$$μg $$V2=2$$μgs $$10-4$$ $$v2=2(0.4)(10)(1.5)$$ $$v=2003$$

A 20 gm bullet is shot horizontally and collides with a 1.98 kg block of wood. The bullet embeds in the block and the block slides along a rough horizontal surface for 1.5 m. If the coefficient of kinetic friction between the block and surface is 0.4, the original speed of the bullet is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material