Question

please answer it. ...please please please ​

Answer 1

Explanation:

(a) Calculate the area of the curve. There are two triangles and one rectangle. Area of first triangle = 1/2 × breadth × height = 1/2×5×4 = 10. Area of second triangle similarly = 1/2 ×3×4 = 6. Area of the rectangle = 7×4 =28. So the total displacement travelled by the truck = 28+6+10 = 44 m.

(b)During last part of the journey the truck decelerates as velocity decreases from

4m/s to 0.

(c) Average velocity = Total displacement/total time = 44/15=2.933 m/s. Hope it helps you.