You are lost at night in a large, open field. Your GPS tells you that you are 122.0 m from your truck, in a direction 58.0o east
of south. You walk 72.0 m due west along a ditch. How much farther, and in what direction, must you walk to reach your truck?
1 answer:
Answer:
The person is 187[m] farther and 70° south to east.
Explanation:
We can solve this problem by drawing a sketch of the location of the person and the truck, then we will draw the displacement vectors and finally the length of the vector and the direction of the vector will be measured in order to give the correct indication of where the person will have to move.
First we establish an origin of a coordinate system.
We can see in the attached schema that the red vector is the displacement vector from the last point to where the truck is located.
The length of the vector is 187 [m], and the direction is 70 degrees south to East.
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Answer:
The required force is 55.38 N.
Explanation:
First we have to find the spring constant K;
k = =
= 553.846 N/m
As,
F= -K
or, F= - 553.846 × 0.10
or, F= -55.3846 N
Hence,
= -
∴ = 55.38 N
The required force to stretch it by this amount is 55.38 N.