General Knowledge
Is "45 seconds" scalar or vector?
Scalar
magnitude only, no direction
7 km northeast + 9 km northeast = ?
16 N east (same direction → add)
3 m east + 4 m north.
What is the Resultant magnitude?
5 m
√(9+16) = √25 = 5m
Is "30 m/s north" scalar or vector?
Vector — has magnitude (30 m/s) and direction (north)
12 m north + 5 m south = ?
7 m north (opposite → subtract; north is larger)
A boat sails 30 m north and then 40 m east.
What is the resultant displacement.
50 m
√(90+160) = √250 = 50m
Is 30°C a scalar or vector quantity?
Scalar
Two forces act on a box: 18 N west and 7 N east.
What is the resultant force?
18 W + 7 E = 18 - 7 = 11 W
<--- ---> (opposite direction)
Is 72 hours a scalar or vector quantity?
Scalar
Is 9.8 m/s² downward a scalar or vector quantity?
Vector