subject

Scalars and Vectors

Physics ⇒ Mechanics

Scalars and Vectors starts at 8 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Scalars and Vectors. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
Define a scalar quantity and give two examples.
Define the term 'unit vector'.
Describe the parallelogram law of vector addition.
Explain the difference between distance and displacement.
A car travels 100 km north and then 100 km east. What is the magnitude of its displacement?
A force of 10 N acts at an angle of 30° to the horizontal. What is the vertical component of the force?
A person walks 3 km east and then 4 km north. What is the magnitude of the resultant displacement?
A vector has a magnitude of 10 units and makes an angle of 60° with the x-axis. What is its y-component?
Which of the following is a correct representation of a vector? (1) 5 m (2) 5 m/s (3) 5 m/s east (4) 5 kg
Which of the following is a scalar quantity? (1) Velocity (2) Acceleration (3) Power (4) Momentum
Which of the following is a vector quantity? (1) Work (2) Energy (3) Displacement (4) Power
Which of the following is NOT a property of vector addition? (1) Commutative (2) Associative (3) Distributive over scalar multiplication (4) Multiplicative inverse
Fill in the blank: The component of a vector along the x-axis is found using __________.
Fill in the blank: The cross product of two parallel vectors is __________.
Fill in the blank: The process of splitting a vector into two or more components is called __________.
Fill in the blank: The sum of two vectors is called their __________.
State whether the following statement is true or false: The direction of a scalar quantity can be specified.
State whether the following statement is true or false: The dot product of two perpendicular vectors is zero.
State whether the following statement is true or false: The magnitude of a vector is always a scalar.
State whether the following statement is true or false: The resultant of two vectors of equal magnitude at 120° to each other is equal to the magnitude of one of the vectors.