Answer:
29.412m/s
Explanation:
where F= force, m= mass, and a=acceleration
we also know that,
a = Δv / t where Δv = change in velocity and t = time
thus F = m ( Δv / t)

Δv
29.412m/s=Δv
Im fairly certain that the answer would be D, and this is because of the law of conservation of energy/momentum.
I think it will be muscle contraction. Hope this helps! Mark brainly please!