Q. 303.9( 14 Votes )

Study the velocity-time graph and calculate.

(i) the acceleration from A to B.

(ii) the acceleration from B to C.

(iii) the distance covered in the region ABE.

(iv) the average velocity from C to D.

(v) the distance covered in the region BCFE.

Answer :

(i) Acceleration from A to B = = = 8.33 m/s2
(ii) Acceleration from B to C =
= -10 m/s2

(iii) Distance covered in the region ABE = × base × height

= × 3s × 25 m/s

= 37.5 m

(iv) Average velocity from C to D =

= = 7.5 m/s

(v) Distance covered in the region BCFE = × sum of parallel sides x distance between them = × ( 25+15) × 1 = 20 m

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