Abaseball is dropped off the side of a cliff. it free-falls to the ground in 8 seconds. during the third second, the ball is traveling about 38 m/s. a0

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.