A man pulling an empty wagon causes it to accelerate at1.4 m/s 2 What will the a

Question

A man pulling an empty wagon causes it to accelerate at1.4 m/s2 What will the acceleration be if he pullswith the same force when the wagon contains a child whose mass isthree times that of the wagon? Express your answer using twosignificant figures. A man pulling an empty wagon causes it to accelerate at1.4 m/s2 What will the acceleration be if he pullswith the same force when the wagon contains a child whose mass isthree times that of the wagon? Express your answer using twosignificant figures. What will the acceleration be if he pullswith the same force when the wagon contains a child whose mass isthree times that of the wagon? Express your answer using twosignificant figures. What will the acceleration be if he pullswith the same force when the wagon contains a child whose mass isthree times that of the wagon? Express your answer using twosignificant figures.

Explanation / Answer

Let       mass of the empty wagon =m       mass of the child =3m       Force applied = F       Acceleration of empty wagon , a1 = F / m                                                         1.4 = F / m                                                             F = 1.4 m          Force issame in both cases       Acceleration of wagon +child , a 2 = F / ( m + 3m) = F / 4m = 1.4m / 4 m = 0.35m/s^2

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