Question

It's Friday night and Hector has been assigned the noble task of baby-sitting Jacob, his 2-year old brother. He puts a crash helmet on Jacob, places him in

a red wagon and takes him on a stroll through the neighborhood. As Hector starts across the street, he exerts a 58.2 N forward force on the wagon. There
is a 21.3 N resistance force against the wagon (due to friction) and the wagon and Jacob have a combined weight of 317 N. Determine the magnitude of
the net force, the mass of the wagon (with Jacob), and the horizontal acceleration of the wagon. (Note: acceleration due to gravity = 9.81 m/s/s)

Answer 1

Step-by-step explanation:

Net force = Forward push - frictional force

= 58.2 - 21.3 =36.9 N

weight of wagon + jacob = mass x g

317 = mass x 9.81

mass = 317 / 9.81 = 32.35 kg

acceleration of wagon = net force / mass

= 36.9 / 32.35

= 1.14 m /s²