Let u is the speed of pellet and cheese after pellet
entrs the cheese.
Apply momentum conservation,
m1*u1 + m2*u2 = (m1+m2)*u
1.2*55 + 0 = (1.2+117)*u
==> u = 1.2*55/(1.2+117)
= 0.558 m/s
now use equation, v^2 - u^2 = 2*a*d
0^2 - 0.558^2 = 2*a*0.25
==> a = -0.558^2/(2*0.25)
= -0.623 m/s^2
Now use the equation, a = -mue_k*g
==> mue_k = -a/g
= 0.623/9.8
= 0.064 <<<<<<<<--------------Answer
Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool...
1. Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a massive block of ice. On one particular shot, his 1.1 g pellet gets stuck in the cheese, causing it to slide 25 cm before coming to a stop. If the muzzle velocity of the gun is 67 m/s and the cheese has a mass of 139 g, what is the coefficient of friction between the cheese and ice?...