Question

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Answer 1

Answer:

80m

Explanation:

s =1/2(a+b)h

=1/2(6+10)×10

=1/2×16×10

=8×10

=80m

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Answer 2

Answer:

Explanation:

To determine the displacement under the velocity-time graph, we explore the area of the:

(1) region of acceleration

(2) region of constant velocity

(3) area of region of deceleration

so to couple this up, we explore the area of a trapezium

height = 10

a = length BC = 8 - 2 = 6

b = 10

Area of a trapezium = 1/2(a + b)*h = 1/2(6 + 10)*10 =8*10 = 80m

The displacement = 80m