Question

One of the following is not a vector quantity. This one is (a) displacement
(b) speed
(c) acceleration
(d) velocity

Answer 1

Answer:

(b) speed

Explanation:

speed has no direction therefore it is not a vector quantity

Answer 2

Answer:

The correct answer is (b) speed.

Explanation:

• A vector quantity exists described as the physical quantity that has both directions as well as magnitude. A vector with a value of magnitude equal to one is named a unit vector and is denoted by a lowercase alphabet with a “hat” circumflex i.e. “û“.
• Speed exists as a scalar quantity – it is the rate of change in the distance traveled by an object, while velocity exists as a vector quantity – it is the speed of an object in a certain direction.

Hence, The answer is  (b) speed.

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