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Q. Choose the best possible option.
Among the following, which is a scalar quantity?
(a) Displacement (b) Force (c) Mass (d) Velocity
Among the following, which is a vector quantity?
(a) Time (b) Energy (c) Temperature (d) Momentum
When two vectors at right angles are added, the magnitude of their resultant is equal to:
(a) The sum of their magnitudes (b) The difference of their magnitudes
(c) The product of their magnitudes (d) The square root of the sum of their squares
Two vectors, A and B have magnitudes of 5 units each and are at right angles to each other. What is the magnitude of their resultant?
(a) 0 units (b) 5 units (c) 7 units (d) 10 units
If vector A has a magnitude of 6 units and vector B has a magnitude of 8 units, and they are parallel to each other. What is the magnitude of their resultant?
(a) 2 units (b) 10 units (c) 14 units (d) 48 units
If the two forces of magnitude 4N and 3N are acting in opposite direction, then magnitude of their resultant is
(a) 1N (b) 7N (c) 5N (d) zero
In vector addition, the direction of the resultant vector is determined by?
(a) adding magnitudes of vectors to be added (b) an angle of resultant with some reference line
(c) subtracting the vectors (d) an angle between the vectors to be added
When two vectors are added, their resultant has the maximum magnitude when the angle between them is:
(a) 0 degrees (b) 45 degrees (c) 90 degrees (d) 180 degrees
If a vector A ⃗ has a magnitude of 10 units and a vector B ⃗ has a magnitude of 15 units, and they are added head-to-tail, which of the following is not possible magnitude of their resultant?
(a) 5 units (b) 10 units (c) 3 units (d) 25 units
Which row describes acceleration, displacement, distance and speed?
Acceleration Displacement Distance Speed
(a)
(b)
(c)
(d) Scalar
Scalar
Vector
Vector Scalar
Vector
Scalar
Vector Vector
Scalar
Vector
Scalar Scalar
Vector
Vector
Scalar
Which is a vector quantity?
(a) a mass of 2.0kg (b) a temperature of -10℃
(c) a weight of 15N (d) an average speed of 20m/s
Forces of 4.0N and 2.0N act a point. Which scale diagram shows the forces that have a resultant of 4.0N?

A student investigates the motion of a ball falling through the air. Which quantity is a vector?
(a) the diameter of the ball (b) the gravitation force on the ball
(c) the distance from which the ball is dropped (d) the speed at which the ball hits the ground
Two forces, X and Y, act upon an object O. the arrows represent the magnitude and directions of the forces. Which arrow shows the direction of the resultant?


What is the size of the resultant of the two forces shown?

(a) 1.0N (b) 3.5N (c) 5.0N (d) 7.0N
The diagram shows the resultant R of a 3.0N force and a 4.0N force that act at a point P. The angle between the 3.0N force and the 4.0N force can be any value from 0° to 90°. Which value of R is not possible?

(a) 4.0N (b) 5.0N (c) 6.0N (d) 7.0N
Forces of 6.0N and 8.0N act as shown. Which diagram shows the resultant R of these two forces?

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