(d) The acceleration of a particle is a constant. At t = Os the velocity of the particle is (10,20)m/s. At t = 4s the velocity is (0, 10)m/s.
(i) What is the particle's acceleration?
(ii) How do the position and velocity vary with time? Assume the particle is
initially at the origin.

You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?