A frictionless stick of mass m and length l lies at rest on

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A frictionless stick of mass m and length L lies at rest on a frictionless horizontal table. A mass km (where k is some number) moves with speed v0 at a 45 degree angle to the stick and collides elastically with it very close to an end. What should k be so that the mass ends up moving in the y-direction?

Reference no: EM13633046

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