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17 July, 03:18

The mass of a stroller and the child it carries is 23.7 kg. A man pushes the stroller with a force of 142 N at an angle of 38.0° to the vertical. The stroller experiences a friction force of 24.0 N due to the brake accidentally being on. What is the stroller's acceleration forward?

A. 5.99 m/s2

B. 3.90 m/s2

C. 2.68 m/s2

D. 4.98 m/s2

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Answers (1)
  1. 17 July, 03:28
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    The horizontal resultant force applied is 142*Cos (38) which is 135.62N

    24N of opposing force

    therefore the total force acting on the stroller is 135.62-24 = 111.62N

    applying the formula f=ma

    where f is force

    m = mass

    a = acceleration

    plugging the values we get the stroller's acceleration forward as 3.90 m/s^2
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