A 42.5 -kg child stands at one end of a 63.0 -kg boat that is 4.00 m long. The b

Question

A 42.5-kg child stands at one end of a 63.0-kg boat that is 4.00 m long. The boat is initially 3.00 m from the pier. The child notices a turtle on a rock beyond the far end of the boat and proceeds to walk to that end to catch the turtle.

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A 42.5-kg child stands at one end of a 63.0-kg boat that is 4.00 m long. The boat is initially 3.00 m from the pier. The child notices a turtle on a rock beyond the far end of the boat and proceeds to walk to that end to catch the turtle. Neglecting friction between the boat and water, describe the motion of the system (child + boat) This answer has not been graded yet. Where will the child be relative to the pier when he reaches the far end of the boat? Will he catch the turtle? (Assume that he can reach out 1.00 m from the end of the boat.)

Explanation / Answer

a) motion of the system is such that It centre os mass will always remains constant

b.)now applying above principle

we have

42.5*4+63*x=0

x=-1.61 m

so child relative to the pier when he reaches the far end of the boat

3+4-1.61

=5.39 m

c.)as he can reach out 1.00 m from the end of the boat

so 6.39 m

so he can not cath the turtle

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