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2.Motion in Straight Line
medium
Match the following columns.
| colum $I$ | colum $II$ |
| $(A)$ Constant positive acceleration | $(p)$ Speed may increase |
| $(B)$ Constant negative acceleration | $(q)$ Speed may decrease |
| $(C)$ Constant displacement | $(r)$ Speed is zero |
| $(D)$ Constant slope of $a-t$ graph | $(s)$ Speed must increase |
A$( A \rightarrow p , q , B \rightarrow p , q , C \rightarrow r , D \rightarrow p , q )$
B$( A \rightarrow q , B \rightarrow p , C \rightarrow r , D \rightarrow p , q )$
C$( A \rightarrow p , r , B \rightarrow p , s , C \rightarrow r , D \rightarrow p , q )$
D$( A \rightarrow p , q , B \rightarrow p , q , C \rightarrow r , D \rightarrow p , q )$
Solution
(d)
With constant positive acceleration, speed will increase when velocity is positive, speed will decrease if velocity is negative.Similarly, with constant negative acceleration speed will increase, if velocity is also negative and speed will decrease, if velocity is positive.
With constant positive acceleration, speed will increase when velocity is positive, speed will decrease if velocity is negative.Similarly, with constant negative acceleration speed will increase, if velocity is also negative and speed will decrease, if velocity is positive.
Standard 11
Physics
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