Question

A girl delivering newspapers travels 5 blocks
west, 7 blocks north, then 8 blocks east.
What is the magnitude of her resultant dis-
placement?

Answer 1

Answer on Question #45813, Physics, Mechanics | Kinematics | Dynamics

A girl delivering newspapers travels 5 blocks west, 7 blocks north, then 8 blocks east. What is the magnitude of her resultant displacement?

Solution:

The magnitude of the displacement is

$$= \sqrt {(x) ^ {2} + (y) ^ {2}} = \sqrt {(3) ^ {2} + (7) ^ {2}} = \sqrt {5 8} = 7. 6 \text { blocks}$$

Answer: $= 7.6$ blocks.

http://www.AssignmentExpert.com/