What is the acceleration of a7kg mass if a force of 68.6n is used to move it toward earth

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(1) Answers

femaleqweasd

In this case you must consider two effects: the action of the force and the effect of the weight of the object:
[latex]F_T = m\cdot a\ \to\ f + p = m\cdot a\ \to\ a = \frac{f + (m\cdot g)}{m}[/latex]
[latex]a = \frac{68,6\ N + (7\ kg\cdot 9,8\ m/s^2)}{7\ kg} = \frac{137,2\ N}{7\ kg} = \bf 19,6\frac{m}{s^2}[/latex]