Solve the below A hockey puck slides over ice with mu k = 0.013 What initial spe

Question

Solve the below

A hockey puck slides over ice with mu k = 0.013 What initial speed should the puck have so it travels the 56m length of the rink? Express your answer to two significant figures and include the appropriate units. A car skids at constant speed down an icy hill inclined at 1.7degree. Find the coefficient of friction between the tires and the icy road. Express your answer using two significant figures A piece of steel rests on a wooden board, with frictional coefficient 0.40 between steel and wood. Find the maximum inclination angle for the board before the steel begins sliding. Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

A. a = ukg = 0.1274 m/s2

2ad = v^2 - u^2

v = sqrt(2 x 0.1274 x 56) = 3.78 m/s

A. a = 0 net force is zero.

u x mgcos5 = mgsin5

u = 0.0875 for wholr car

if 4 tyrs then for 1 tyr = 0.0219

A. tanA = u = 0.40

A = tan-1(0.40) =21.80 degrees

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