H06 roblem 6.20 The figure shows the velocity graph of a 68 kg passenger in an e

Question

H06 roblem 6.20 The figure shows the velocity graph of a 68 kg passenger in an elevator What is the passengers weight at t 1 s? Express your answer to two significant figures and include the appropriate units (Figure 1) wValue Units Submit Request Answer Part B What is the passengers weight at t5s? Express your answer to two significant figures and include the appropriate units. Figure 1 of 1 v, (m/s) Part C 0 2 46 10 What is the passengers weight at t9? Express your answer to two significant figures and includ e the appropriate units.

Explanation / Answer

N = m(g+a)

for t = 1s , a = 4-0 /1-0 = 4 m/s2

so, N = 68(9.8+4) = 938.4 or 940 N

FOR t = 5s , a = 0 ( straight line)

N = 670 N

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