Answer:
cross out the false piece in blue and write the true piece in red
Practically yes
So
If mass is more output may come less so it affects the efficiency practically
But thepritically it doesn't
It’s supposed to be gamma, what are your other options
Answer:

Explanation:
It is given that,
Angular speed of the football spiral, 
Radius of a pro football, r = 8.5 cm = 0.085 m
The velocity is given by :


v = 3.68 m/s
The centripetal acceleration is given by :



So, the centripetal acceleration of the laces on the football is
. Hence, this is the required solution.