Tom has a mass of 31 kg, as Tom paddles, a force of 4.7 N acts in a direction due east. In addition, the current of water exerts a force of 1.1 N on Tom in a direction 55 degrees south of east. When these forces begin to act the initial velocity of the Tom is 2.9 m/s in a direction due east. Find the x-direction displacement of the Tom in 7 s.
Give your answer to 2 decimal places.
2006-12-06 03:34:29 · 4 answers · asked by wot_up_peeps2000 2 in Science & Mathematics ➔ Physics
Would apprecieate it if you showed your working out. Thanks
2006-12-06 03:39:24 · update #1
7.82
2006-12-06 03:37:38 · answer #1 · answered by Scotty 7 · 0⤊ 0⤋
the force in the east direction = 4.7 + 1.1 * cos(55)
the force in the South direction = 1.1 * sin(55)
acceleration = force / mass
So I get around 0.172 m^2/s acceleration east
and 0.0291 m^2/s acceleration south
Then using the equation
S= u*t + (1/2) a* (t^2)
to find the distance traveled in each direction
(u=initial velocity, t = time a=acceleration)
I get 24.51 meters east
and 0.71 meters south
you haven't specified which direction x is in so thats as far as I can go.
2006-12-06 11:51:04 · answer #2 · answered by Mike 5 · 0⤊ 0⤋
Wow deja vu. I've just answered this question.
2006-12-06 18:29:52 · answer #3 · answered by bo nidle 4 · 0⤊ 0⤋
8.95
2006-12-06 11:36:45 · answer #4 · answered by G-Unit 3 · 0⤊ 0⤋