Help with physics?

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Best Robot EU

Senior Member

10-13-2013

A 380 kg sailboat increases its speed from 3 m/s to 16 m/s while travelling 500 m at an angle of 73 north of east. Find the magnitude and direction of the net force that acts on the sailboat.

holy **** how do I even do this


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SculptorOvFlesh

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Senior Member

10-13-2013

darude- Sandstorm


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Gabe NewelI

Senior Member

10-13-2013

42.


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MiniCookies2

Senior Member

10-13-2013

I'm pretty sure you don't want to ask a bunch of gamer nerds these types of questions......


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Best Robot EU

Senior Member

10-13-2013

bump
i seriously need help here guys, I looked it up on google and none of the explanations made sense


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Father Zyzz

Member

10-13-2013

You have the mass of boat, the initial velocity, final velocity and the distance it took to attain that velocity (hint hint)

What do you think the first step should be? hint hint


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YGY818

Senior Member

10-13-2013

Phone a friend. (classmate)


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Best Robot EU

Senior Member

10-13-2013

Quote:
Originally Posted by Father Zyzz View Post
You have the mass of boat and the initial velocity, final velocity and the distance it took to attain that velocity (hint hint)

What do you think the first step should be? hint hint
f=ma?


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Spitsonkittens

Senior Member

10-13-2013

Find the equation sheet for your course. Find ones for force, velocity, and mass. Use them. You may need substitute one into the other.

My friend legitimately got a 96% in college physics by knowing all the formulas and their relations.


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Riot Morgageddon

Player Support Tech Specialist

10-13-2013
1 of 2 Riot Posts

Morgageddon tries to remember college...

Well, it's worded awkwardly, but I have to assume you go from 3 m/s at the start of your 500m and then end at 16 m/s at the end of the 500m. From this, you can make a velocity profile, use the standard kinematic equation and integrate to find the total energy expended to have the sailboat go from 3 m/s to 16 m/s over 500 meters. Then, you can equate that to an equal force applied at a single point at the start, with a magnitude and a direction, something that'll be like 1500N @ 73 degrees north of east (since you said nothing about currents or other forces acting on the sail boat).

tl;dr

Draw out the problem to start. Find your governing equations. Solve said equations.


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