I could use some help with the following Physics questions:

A contestant in a winter games event pushes a 33.0 kg block of ice across a frozen lake as shown in the figure below. 25 F The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (For each answer, enter a number.) (a) Calculate the minimum force F (in N) he must exert to get the block moving. IN (b) What is its acceleration (in m/s2) once it starts to move, if that force is maintained? m/s2 Semi-trailer trucks have an odometer on one hub of a trailer wheel. The hub is weighted so that it does not rotate, but it contains gears to count the number of wheel revolutions-it then calculates the distance traveled. If the wheel has a 1.05 m diameter and goes through 220,000 rotations, how many kilometers should the odometer read? (Enter a number.) km