For the velocity tiem graph shown in Fig. 2 (CF).14, the distance covered by the body in last two seconds of its what fraction if the total distance covered by it in all the seven seconds?
.

Options

A. (a) 1`1/2`
B. (b) `1/4`
C. `1/3`
D. `2/3`

Answer

B

Explanation

Area covered in last two seconeds )/(Area covred in 7 seconds)`
` = (area of Delta CDF)/(area of trapizium ABCD)`
`=(( 2 xx 10 ) //2)/(( 2 + 6 ) ss 10 xx 1/2) = (10)/(40) = 1/4`.