Choices are equal to, greater than, or less than

Question

Question

Answer 1

Answer #1

1) speed as seen from shore is the vector sum of river velocity and boy velocity therefore the speed of the boat for A is less than for D

2) Horizontal component of velocity is same for K and F therefore time to row will be equal to

3) Horizontal component of velocity of F is less than C therefore time to row across for F is greater than for C

4) D has vertical component in the direction of river flow therefore distance for B is less than for D

5) Horizontal component of velocity of H is more than K therefore time to row across for H is less than for K

Answer 2

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