Question

two identical balls each moving with speed v at right angle to each other collide perfectly inelastically. their speed after collision is?

Answer 1

Answer:

When the "two identical balls" that are moving with their respective speed v at the right angle to 'each other collide perfectly' in elastically, their speed after collision will be$=\frac{v}{\sqrt{2}}$

Explanation:

• According to "law of conservation of momentum", when two bodies with equal masses are colliding with each other, the final momentum will be equal to the sum of their initial momentum.
• In the "case of inelastic collision", the 'internal kinetic energy' isn't conserved but changes.
• So, their total kinetic energy $=\frac{1}{2} m v^{2}+\frac{1}{2} m v^{2}=m v^{2}.$
• So in a 'perfectly inelastic' collision, the speed of both the bodies after collision becomes half of their initial speed.

Answer 2

Explanation:

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