Question

How much force is required to keep a 2-kg object moving to the right with a constant speed of 8.4 m/s?

Answer 1

0 Newtons

Step-by-step explanation

Step 1

given

`\begin{gathered} mass=2\text{ kg} \\ \text{ v cte= zero acceleration, so} \\ a=0 \\ v=8.4\text{ }(m)/(s) \end{gathered}`

A body remains in the state of rest or uniform motion in a straight line unless and until an external force acts on it

it means if the speed is constant, the accelation is zero

hence

a=0

according to the inertia property If there is no external force acting on the body

so, the answer is

0 newtons