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.