A pool 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?

this is physics

Ngl it be 2020

To calculate the acceleration of the ball, we can use the formula:

acceleration = (final velocity - initial velocity) / time

First, let's determine the initial velocity and final velocity of the ball.

Given:
Initial velocity (u) = 12 cm/s (to the right)
Final velocity (v) = 21 cm/s (to the right)

Next, we need to determine the time taken for the collision.

Given:
Time (t) = 0.45 seconds

Now, we can substitute these values into the formula to calculate the acceleration:

acceleration = (21 cm/s - 12 cm/s) / 0.45 seconds

Simplifying the equation:

acceleration = 9 cm/s / 0.45 seconds

Finally, we can calculate the acceleration:

acceleration = 20 cm/s²

Therefore, the ball's acceleration is 20 cm/s².