At a given instant in time, a 18-kg rock is observed to be falling with an acceleration of 7.75 m/s2. what is the magnitude and direction of the gravitational force on the rock?

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.