Answer:
16.67 cm/s
Step-by-step explanation:
To calculate the velocity of the ball, we need to divide the distance it travels by the time it takes to travel that distance.
velocity = distance / time
So for the ball that rolls 35 cm in 2.1 seconds, the velocity can be calculated as follows:
velocity = 35 cm / 2.1 s = 16.67 cm/s
So the velocity of the ball is 16.67 cm/s. Note that the unit of velocity is distance per time, in this case cm/s.