Help me pleassseee If a Teflon box with a weight of 35N is pushed across a steel floor with a force of 8.2N, what is the acceleration of the box?

I know the answer is 1.9 m/s
But I don’t know how to get there or like show my answer

Does anyone have the answers to online physics course plato course physics, semester a v3.0

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.