Two 100-kg bumper cars are moving toward one another in opposite directions, Car A at 5 m/s meters per second, and Car B at −9 m/s negative 9 meters per second. They collide head-on with one another. Each car bounces back in the opposite direction it was moving before the collision. If after the collision the final velocity of Car B is 5 m/s meters per second, what is the final velocity of Car A?

-9ms-1

Explanation:

it will be dat because the initially both are moving at different direction,so for momentum to be conserved they had separate leading to the switching of the two initial velocities

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.

it doesn't. it was imagined up in the middle ages.