A ball roles off a platform as shown in the figure below with a horizontal velocity vx= 8.1 m/s. The platform is y = 1.5 m high. Use g = 10 m/s/s. Determine the horizontal range of the projectile

Why is there friction between objects

What happens to light waves from a star as the star moves away from earth?

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant