Question

Which of the following statements is correct? 

a) The basic unit of time is second. 

b) Every object’s motion is uniform. 

c) Two cars move for 5 minutes and 2 minutes respectively. The second car is faster because it takes less time. 

d) The speed of a car is expressed in km/h.

Answer 1

a) This statement is correct. 

b) This statement is not correct. 

c) This statement is not correct. In the statement distance covered by the cars is not mentioned. 

d) This statement is correct.