1) These answers I have in the box are wrong for this problem. Can someone help

Question

1) These answers I have in the box are wrong for this problem. Can someone help me find the answer? Part A Problem 2.19 What is the object's position at f 2 s? Express your answer using two significant figures. Acar starts from zi 20m att 0 and moves with the velocity graph shown in figure below. (Figure 1) 28 Submit My Give Up Answers incorrect: Try Again; 6 attempts remaining Part B What is the object's position at t 3 s? Express your answer using two significant figures. of 1 20 Submit My Answers Give Up vr (m/s) 12 Incorrect: Try Again: 11 attempts remaining Part C What is the objects position att 4 s? t (s) Express your answer using two significant figures. 3 4

Explanation / Answer

A) x = x0 + area under curve from 0 to 2 sec

x = 20 + 1/2 *b * (h1 + h2) (area of a trapezoid)

= 20 + 1/2 *2 * (12 + 4) = 36 m

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b) now the area is a triangle

x = 20 + 1/2 * 12 * 3 = 11 + 18

x = 38 m

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c) x = 20 + 1/2 * 12 * 3 - 1/2 * 1 * 4

x = 36 m

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