Answer:
Part a)
Part b)
Part c)
Explanation:
Part a)
As we know that displacement is given as
now the displacement in 4.5 s and t = 4 s is given as
now displacement is given as
Part b)
So displacement of the ball in given interval of t = 4.00 to 4.5 s
time interval is given as
average velocity is given as
Part c)
So displacement of the ball in given interval of t = 4.00 to 4.1 s
average velocity is given as
Similarly for time interval t = 4.0 s to t = 4.01 s
average velocity is given as
Similarly for time interval t = 4.0 s to t = 4.001 s
average velocity is given as
so instantaneous velocity is given as