- #1

kokok

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## Homework Statement

a toy cart of mass 5kg is projected up a ramp incined at 30 degree to the horizontal, with an initial velocity of 6m/s. if the frictional force opposing its motion is 4N, find the distance it travels before stopping, and its increase in gravitational potential energy at that point.

## Homework Equations

F=ma

v2^2 = v1^2 + 2ad

## The Attempt at a Solution

so using vector, mgsin30 - 2 = ma

24.5 = 5a

a=4.9m/s^2

sub into

v2^2 = v1^2 + 2ad

and i got 36/1.8 = 20 = d but it is very different from answer of the book

please help me to solve it