What is light ? ccc dxdxccx

Light is electromagnetic radiation that shows properties of both waves and particles. Light is a form of energy.Light also keeps the Earth warm. Light exists in tiny energy packets called photons. Each wave has a wavelength or frequency. The human eye sees each wavelength as a different color.

Explanation:

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here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be