Answer:
5437.5 N
Explanation:
from the question we are given the following:
mass = 7.25 kg
initial speed (u) = 10.5 [tex]\frac{m}{s}[/tex]
finial velocity (v) = 0
compression (s) = -7.35 cm = -0.0735 m (the negative sign is because the face is compressed, so there is a decrease)
we know that force = mass x acceleration,
we have our mass but need to find the acceleration. we can get the acceleration by applying the formula below
[tex]v^{2} = u^{2} + 2as[/tex]
therefore
0 = 10.5^{2} + (-2)× a × 0.0735[/tex]
a = [tex]\frac{10.5^{2} }{ 2 × 0.0735[/tex]}[/tex]
a = 750
from F = m x a
force = 7.25 x 750 = 5437.5 N
