# Help me please with physics

posted by Nicole

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?

1. bobpursley

force pulled-friction= ma

2. Nicole

Fnet=65-15=0?

3. Nicole

I got finally got letter a but im stuck at b now :(

4. bobpursley

if you have a...

Vi is zero, you know a, and d. solve for Vf

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