Asked 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?
Answered by bobpursley
force pulled-friction= ma

start with that, solve for a.
Answered by Nicole
Fnet=65-15=0?
50 is the answer?
Answered by Nicole
I got finally got letter a but im stuck at b now :(
Answered by bobpursley


if you have a...

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