In a collision which of the mechanical forces is involved explain briefly

In a collision, there'll always be two mechanical force involved. One is the force of acceleration and the other is the frictional force. In an event of a collision, the two colliding bodies will experience change in acceleration, one who has the larger momentum will retain its direction of acceleration, all the while both body will experience another which is frictional force.

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.