Pls help I'll give brainliest

thanks

infared

radio waves

UV

radio waves

UV

speed in vacuum

HOPE THIS HELPS!!

the most reliable source of information.is wikipedia

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