a) What is the normal force acting on the crate?   --- kg N m/s m s m/s2 N/m b) With what force must the puppy pull on the crate to get it to move?   --- m/s s m/s2 kg m N N/m c) The puppy pulls with a force of 54 N and the crate starts moving! Determine the acceleration of the crate.

Amalia's little puppy is trying to pull a crate across the floor. The mass of the crate is 8.8 kg and the coefficients of static and kinetic friction between the crate and the floor are 0.57 and 0.42 respectively. Determine the following.

a) What is the normal force acting on the crate?
  --- kg N m/s m s m/s2 N/m

b) With what force must the puppy pull on the crate to get it to move?
  --- m/s s m/s2 kg m N N/m

c) The puppy pulls with a force of 54 N and the crate starts moving! Determine the acceleration of the crate.
  

d) The puppy stops pulling and the crate comes to a stop. The poor puppy is now tired. The puppy tries to pull the crate again, but only exerts a force of 37 N on the crate. What is the force of friction acting on the crate?

e) What type of friction is acting on the crate in part "d"?