A toy car rolls up a ramp(an inclined plane). Assume the direction up the ramp is positive. If the toy car starts with a speed of 3.45 m/s and slows at a constant rate of -0.2 m/s2, then what is its speed after 1.1s?

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2