A99.1-kg baseball player slides into second base. the coefficient of kinetic friction between the player and the ground is μk = 0.646. (a) what is the magnitude of the frictional force? (b) if the player comes to rest after 1.36 s, what is his initial speed?

628.022466 N

8.61 m/s

Explanation:

m = Mass

= 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

Magnitude of frictional force is 628.022466 N

Initial speed of the player is 8.61 m/s

i think it's 35 meters