Recent content by gamarrapaul

why should the answer be positive ? iam kind of confused I thought it depended on what velocity is positive and negative

oh so the distance will be 18.5m I thought that .5 was the distance that the internal force is acting on the object Work = F*d

the distance that gravity is doing work on the ball will be 18m ??

in the problem they give you V=44m/s, mass=.09 kg , and a vertical distance=18m the problem states that a ball is shot straight down and at the distance 18m it encounters a sand bag the ball goes through the sand bag .5 m. they ask what is the internal work neglecting friction? for this...

i got it thank you very much V=4.17 and T=41.8

the final height will be 2.5 so 2.5sin40 is part of the height therefore to find the height we go down I need to substract 2.5 - 2.5sin40 ?

the equation will be mgh = 1/2mv^2 the masses wil cancel out but I am not sure how to incorporate the angle gh = 1/2 * sin(40)^2 ?? I think is wrong

A 2.5-kg object suspended from the ceiling by a string that has a length of 2.5 m is released from rest with the string 40 below the horizontal position. What is the tension in the string at the instant the object passes through its lowest position? how do I find the velocity using...