Physics Quiz
Authored by antigegn mekete
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10th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of a unit vector?
A vector with magnitude of one
A vector with magnitude of zero
A vector with magnitude of three
A vector with magnitude of two
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which unit vector points in the +x direction in a two-dimensional x-y coordinate system?
î
ĵ
k
r
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can any vector be expressed in terms of unit vectors?
Axî + Ay + A₂k
Ax + Ay + A₂
Ax + Ayĵ + A₂k
Axî + Ayĵ + A₂k
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of vector addition in unit vector notation?
(Ax + Bx)i + (Ay + By) + (A₂ + B₂)
(Ax + Bx)i + (Ay + By) + (A₂ + B₂)k
(Ax + Bx) + (Ay + By) + (A₂ + B₂)
(Ax + Bx)i + (Ay + By)ĵ + (A₂ + B₂)k
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the unit vector in the same direction as a vector be found?
r / |r|
r * |r|
r - |r|
r + |r|
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the magnitude of the original vector r = xî + yĵ + zk?
x * y * z
√(x² + y² + z²)
x² + y² + z²
x + y + z
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sum of the x components in vector addition?
Ax * Bx
Ax + Bx
Ax - Bx
Ax / Bx
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