Answer:
Concave lenses are thinner at the middle. Rays of light that pass through the lens are spread out (they diverge). A concave lens is a diverging lens. When parallel rays of light pass through a concave lens the refracted rays diverge so that they appear to come from one point called the principal focus.
I couldnt type it out so here's a picture
To find the rate of deceleration, subtract the initial velocity from the final velocity.
I feel like it’s Boyle’s Law, correct me if I’m wrong .
