Question

Study the velocity-time graph and calculate. (a)The acceleration from A to B(b)The acceleration from B to C(c)The distance covered in the region ABE (d)The average velocity from C to D(e)The distance covered in the region BCFE

Answer 1

Explanation:

(a) a = (25 - 0) / (3 - 0) = 8.3 m/s2

(b) a = (20 - 25 ) / (4 - 3) = -5 m/s2

(c) Distance = Area of triangle ABE = 1 / 2 × 3 × 25 = 37.5 m 

(d) V = (20 - 0) / 2 = 10 m/s

(e) This Distance = Area of trapezium BCFE 

= 1 / 2 (25 + 20) × (4 - 3) = 22.5 m 

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