1) A rolling ball moves from x 1 = 3.8 cm to x 2 = -4.2 cm during the time from

Question

1)
       A rolling ball moves fromx1 = 3.8 cm tox2 = -4.2 cm during the time fromt1 = 3.4 s tot2 = 6.1 s. What is its average velocity?
1 cm/s 2) If you are driving 105km/h along a straight road and you look to the side for1.0 s, how far do you travel duringthis inattentive period?
1 m

1)
       A rolling ball moves fromx1 = 3.8 cm tox2 = -4.2 cm during the time fromt1 = 3.4 s tot2 = 6.1 s. What is its average velocity?
1 cm/s 2) If you are driving 105km/h along a straight road and you look to the side for1.0 s, how far do you travel duringthis inattentive period?
1 m

Explanation / Answer

(1) Given that the x1 = 3.8 cm to x2 = -4.2 cm andt1 = 3.4 s tot2 = 6.1 s.        Then the average velocity is =(x2-x1) / (t2 - t1)                                                 = ------------ cm/s (2) Given that the speed is u = 105 km/h = 29.2 m/s        Time taken is t = 1.0 s        Distancetraveled    d = u/t                                       = ----------m

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