A football player throws the ball at a 45 degree angle. Which of the following are possible values for the goven variables at the highest point of the projectile’s trajectory? A. Vertical acceleration Ay=-9.8m/s^2 and vertical velocity Vy=15 m/s.

B. The horizontal velocity Vx=15 m/s while vertical velocity Vy=0m/s

C. The Horizontal Velocity Vx=0 m/s

D. Both horizontal and vertical acceleration equal 0 m/s^2

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