Apool ball is rolling at a velocity of 12 cm/s to the right when it is hit by another ball. it continues moving right at a velocity of 21 cm/s. if the collision lasts 0.45 seconds, what is the ball's acceleration?
a.+9 cm/s2
b.20 cm/s2 to the right
c.26 cm/s2 to the right
d.+46 cm/s2

B

Explanation:

Acceleration = rate of change in velocity

a = (21-12)/(0.45) = 20cm/s^2

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

are there options? cause you ain’t. real specific