During one week at Jackson School, 210 students buy milk and 196 students buy juice. How many drinks are sold that week?
2 answers:
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Answer: The Work done to move the object is
Step-by-step explanation:
Given;
Force F=3
Vectors of F= (3,-1)
Moves object to a distance=9
Let A and B be the displacements Vectors
A= (0,-5)
B= (6,-2)
To Find:
Work done in foot-pounds
Solution:
Work done
Direction of force vector= (3,-1) (i, j)
=3i-j
Unit of force vector
Force vector=(Force/Unit Vector)Direction of force vectors
F=
Direction of motion vector= (B-A)
= (6,-2)-(0,-5) x i,j)
=(6-0),(-2-5) x (i, j)
=(6,-7) x (i, j)
=6i-7j
Unit of motion vector
Motion Vector= (Distance moved by the object/Unit motion vector) × (Direction of motion vectors)
Workdone
Result:
Work done to move an object