1.26 times 10^1 1.43 times 10^1 1.61 times 10^1 1.82 times 10^1 2.06 times 10^1

Question

1.26 times 10^1 1.43 times 10^1 1.61 times 10^1 1.82 times 10^1 2.06 times 10^1 2.33 times 10^2 2.63 times 10^1 2.97 times 10^1 A passenger rushing to catch a plane at the airport walks on a moving sidewalk at a speed of 3.0 km/h relative to the sidewalk in the direction that the sidewalk is moving. The sidewalk is 130m long and moves with a steady velocity of 1.9 km/h. How long (in s) does it take for the passenger to get from one end of the sidewalk to the other, that i-to cover the 130 m? (in s) 5.86 times 10^1 6.62 times 10^1 7.48 times 10^1 8.45 times 10^1 9.55 times 10^1 1.08 times 10^2 1.22 times 10^2 1.38 times 10^2 If the passenger's stride is 70cm, how many steps are taken in going from one end of the moving sidewalk to the other? 8.41 1.22 times 10^1 1.77 times 10^1 2.57 times 10^1 3.73 times 10^1 5.41 times 10^1 7.84 times 10^1 1.14 times 10^2

Explanation / Answer

13. relative distance = 130 m

relative speed of passenger wrt sidewalk = 3 + 1.9 = 4.9 km/h

= 4.9 x 1000 m / 3600 s

= 1.36 m/s

t = d / v = 130 / 1.36

= 95.5 s Or 9.55 x 10^1

Ans(E)

14. distance travelled by passenger = (3 x 1000 / 3600 ) (95.5)

= 79.59 m

n = 79.59 / 0.70 = 113.7

Ans(H)

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