Determine the speed, wavelength, and frequency of light from a helium-neon laser as it travels through sodium chloride. The wavelength of the light from the laser is 632.8 nm in air and the index of refraction of sodium chloride is 1.544.

choosing tennis and golf balls is your inde choice.

their mass and volume are dep

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.