Scalars and Vectors
Physics ⇒ Mechanics
Scalars and Vectors starts at 8 and continues till grade 12.
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See sample questions for grade 12
A boat moves 4 km east and then 3 km north. What is the direction of its resultant displacement with respect to east? (Give answer in degrees.)
A force of 10 N acts at an angle of 30° to the horizontal. What is the horizontal component of the force? (Give answer up to two decimal places.)
A man walks 3 km north and then 4 km east. What is the magnitude of his resultant displacement?
A vector has a magnitude of 12 units and is directed along the negative y-axis. Write its component form.
A vector has a magnitude of 5 units and makes an angle of 60° with the x-axis. What are its x and y components? (Give answers up to two decimal places.)
Define a scalar quantity and give two examples.
Describe the triangle law of vector addition.
Explain the difference between distance and displacement.
Explain why temperature is considered a scalar quantity.
If a car travels 100 m east and then 60 m west, what is the magnitude of its displacement?
If a vector A has components Ax = 6 and Ay = 8, what is the magnitude of vector A?
If a vector is multiplied by a negative scalar, what happens to its direction?
If two vectors are perpendicular to each other, what is the angle between them?
Is acceleration a scalar or a vector quantity?
What is the unit vector in the direction of the vector 3i + 4j?
