A car moving in the positive direction with an initial velocity of 33 m/s slows down at a constant rate of -3 m/s^ 2 whats distance does the car cover in 9s?

Can someone explain to me how to do this problem ?

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.