A block slides down a 45 degree inclined plane starting from rest. What is the acceleration of the block? What is the final speed of the block after it travels 200 meters down the incline?

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)