Question1a 20g rifle bullet travelling 230 ms buries itself

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Reference no: EM13350401

Question1

A 20g rifle bullet travelling 230 m/s buries itself in a 3.9 kg pendulum hanging on a 2.7 m long string that makes the pendulum swing upward in an arc. Find out vertical and horizontal components of the pendulum's displacement.

Question2

A 60 kg woman stands on the back of a 6.0 m long, 140 kg raft that is floating at rest in still water with no friction. The raft is 0.50 m from a fixed pier.

(a) Woman walks to the front of the raft and stops. How far is the raft from the pier now?

(b) While woman walks, she maintains a constant speed of 3.0 m/s relative to the raft. Find out total kinetic energy of the system (woman plus raft)

Reference no: EM13350401

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