- #1
lomantak
- 10
- 0
The 1.4 kg object below is at rest, suspended in deep space, far from any planet or other body. If the forces shown below are exerted simultaneously on the object, what will be the velocity of the object after 3.5 s?
http://www.geocities.com/monsieurgoontaz/images/image1.jpg
Split into x and y, so ...
For x:
[tex][2.9cos(30)]-6.4[/tex]
[tex]=-3.889[/tex]
For y:
[tex][2.9sin(30)]+4[/tex]
[tex]=5.45[/tex]
So take the sums of X and Y and do pythag, getting 6.6953 at -35.5 degrees as the resultant. Then taking the resultant force, plug it into [tex]F=ma[/tex]? The question asks for velocity, but the formula [tex]F=ma[/tex] only has the acceleration. Any help is greatly appreciated! Thanks!
http://www.geocities.com/monsieurgoontaz/images/image1.jpg
Split into x and y, so ...
For x:
[tex][2.9cos(30)]-6.4[/tex]
[tex]=-3.889[/tex]
For y:
[tex][2.9sin(30)]+4[/tex]
[tex]=5.45[/tex]
So take the sums of X and Y and do pythag, getting 6.6953 at -35.5 degrees as the resultant. Then taking the resultant force, plug it into [tex]F=ma[/tex]? The question asks for velocity, but the formula [tex]F=ma[/tex] only has the acceleration. Any help is greatly appreciated! Thanks!