Help me please with physics

A 25kg mass is on a level, rough surface where the force of friction is a constant 15 N. A horizontal applied force of 65 N acts on the mass. The mass is initially at rest.

a) what speed does the mass have after 4.0 seconds?

b) what speed does the mass have after being moved 2.0m?

asked by Nicole
  1. force pulled-friction= ma

    start with that, solve for a.

    posted by bobpursley
  2. Fnet=65-15=0?
    50 is the answer?

    posted by Nicole
  3. I got finally got letter a but im stuck at b now :(

    posted by Nicole


  4. if you have a...

    Vf^2=Vi^2+2ad
    Vi is zero, you know a, and d. solve for Vf

    posted by bobpursley

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