Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Which of the following correctly expresses the displacement
Δ
x
\Delta x
Δ
x
of a particle that moves from position
x
1
x_1
x
1
to position
x
2
x_2
x
2
along a straight line? a)
Δ
x
=
∣
x
2
−
x
1
∣
\Delta x = |x_2 - x_1|
Δ
x
=
∣
x
2
−
x
1
∣
b)
Δ
x
=
x
2
−
x
1
\Delta x = x_2 - x_1
Δ
x
=
x
2
−
x
1
c)
Δ
x
=
x
1
+
x
2
2
\Delta x = \dfrac{x_1 + x_2}{2}
Δ
x
=
2
x
1
+
x
2
d)
Δ
x
=
x
1
−
x
2
\Delta x = x_1 - x_2
Δ
x
=
x
1
−
x
2
Browse the problem library