Answer:
628.022466 N
8.61 m/s
Explanation:
m = Mass
[tex]\mu[/tex] = Coefficient of friction
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s²
[tex]F_f=\mu mg\\\Rightarrow F_f=0.646\times 99.1\times 9.81\\\Rightarrow F_f=628.022466\ N[/tex]
Magnitude of frictional force is 628.022466 N
[tex]F=ma\\\Rightarrow a=\frac{F_f}{m}\\\Rightarrow a=\frac{628.022466}{99.1}\\\Rightarrow a=6.33726\ m/s^2[/tex]
[tex]v=u+at\\\Rightarrow 0=u-6.33726\times 1.36\\\Rightarrow u=8.61\ m/s[/tex]
Initial speed of the player is 8.61 m/s
