Recent content by yogoes123

A sharpshooter shoots a bullet horizontally over level ground with a velocity of 3.00 x 10^2 m/s. At the instant that the bullet leaves the barrel, its empty shell casing falls vertically and strikes the ground with a vertical velocity of 5.00 m/s a) How far does the bullet travel b) What is...

Ok guys i think there is a bit of confusion. The question says the bullet has a horizontal velocity of 300 m/s. They want you to find range. They also say the bullet shell falls vertically at a rate of 5 m/s, not sure why but its probably needed. Thats all they give u. Horizontal Velocity...

sorry i somehow missed that, very sorry i edited it.

Homework Statement bullet shot horizontally over level ground with a velocity of 300m/s. at the instant that the bullet leaves the barrel, its empty shell casing falls vertically and strikes the ground with a vertical velocity of 5.00m/s how far does the bullet travel what is the vertical...

Homework Statement Block is pushed across a horizontal surface with a coefficient of kinetic friction of 0.15 by applying a 150N horizontal force the block accelerates at a rate of 2.53m/s^2 find the mass of the block Homework Equations Uf=ff/fn f=ma The Attempt at a Solution...

Ok I think I got this, I used Vf^2=Vi^2+2ad Then I did a= 18^2/2/729 and i got 0.2222222 then I used F=ma and got 316, thanks so much for clearing that up.

I thought it starts to slow down after the 729m. Are you saying that is it slowing down within 729m?

The TB answer is 316, my answer is 624.8, sorry I didnt make that clear.

So it would be correct, no? I can't figure out what i did wrong.

I used v=d/t swapped it around and solved for t=d/v and that gave me 40.5s, is that wrong?

Homework Statement Driver brakes 1420kg car moving at 64.8km/h [W]. Car slows down and comes to stop after 729m [w] find net forceHomework Equations a=v/t f=ma The Attempt at a Solution t=40.5 a= 0.44 f=1420(0.44) f= 624.8 My answer is 624.8N TB Answer: 316N what am i doing wrong?