Question

2. A vector quantity has
(a) magnitude only
(b) direction only
(c) both magnitude and direction
(d) none of these
3. Sand is used as a measuring device in
(a) sand clock
(b) sun clock
(c) water clock
4. 72 km/h is equal to
(a) 10 m/s
(b) 20 m/s
(c) 30 m/s
5. Which of the following is not used as a device to measure time in ancient times?
(a) Sun clock (b) Sand clock
(c) Water clock
(d) wall clock
(d) 40
(d) Digital clock​

Answer 1

Answer:

c) both magnitude and direction

(a) sand clock

20 m/s

(c) Water clock

Explanation: