- #1

Nickles

- 6

- 0

## Homework Statement

a mass of 10kg, initially at rest, is acted on by a force of 10N for 10 s. What is the final velocity of the mass?

## Homework Equations

i think this equation should help: F= change in momentum/ time

## The Attempt at a Solution

hey everyone i am out of school so far for the summer but i love physics so much thta i want to self study it over the entire summer and so far so god butr i can't get this problem. please help me.

i tried using the formual above and here ARE MY STEPS

F= mv-mu/ t

10N= {10kgx V- 10kg x 0 m/s) / 10s

10= 10kg x V- 0/ 10s

10N x 10s= 10 x v

100/10= 10

v= 10

but my book says the answer is 20 m/s as the answer and i have no idea how they arrived at this answer, i am not really that good AT QUESTIONS LIKE THIS BUT I LOVE P[HYSICS SO MUCH THAT I AM WILLING TO LEARN SO any help will be truly appreciated . i think i might be using the wrong formula.