Recent content by girl52

um...12N toward the wall?

edited

OOOH okayy i don't know how i forgot that! i just don't know which one is negative. i made the inital velocity negative, and i got 12N for the answer...is that right? i got: 0.1F=(.15*3)+(.15*5) F=12 when i made the final velocity negative i got 3N im so confused

inelastic collision...kinetic energy lost? Homework Statement a bullet with a mass of 6 g is fired through a 1.25kg block of wood on a frictionless surface. initial speed of the bullet is 896 m/s and speed of bullet after it passes through it is 435 m/s. what's the final velocity? how much KE...

Homework Statement a ball w/ mass of .15kg and a velocity of 5m/s strikes a wall and bounces right back with v=3m/s. ball is in contact with wall for 0.1 sec, how much force did the wall exert on the ball? Homework Equations Ft=mvf-mvi F=? t=0.1 m=.15 vf=3m/s vi=5 The Attempt at...

no...it's a take home test worth a lot of points so i want to be 100% sure i got it right

Homework Statement an egg dropped on the road breaks, while the egg that is dropped on grass doesn't break...why? a. the change in momentum is greater b. change in momentum is less c. the time interval for stopping is greater d. time interval for stopping is less Homework Equations...