4. A little boy pushes a wagon with his dog in it. The mass of the dog and wagon together is 70 kg. The wagon accelerates at 0.85 m/s². What force is
the boy pulling with? F=mxa

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 70 × 0.85

We have the final answer as

Hope this helps you

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

it doesn't. it was imagined up in the middle ages.