Recent content by lawsonj

How can you solve for t without a? by substituting the values for vel., I get [100 m/s = at] or [(100/t) = a]. Either way I can't solve t or a. I did look at the list of equations. The one you described above is one I was already using. Is it forum rules to not answer homework questions? So...

I'm not sure what you're alluding to here, it's a little vague...My algebra isn't very good, so I'm not sure what method you're referring to that will let me solve for the variables I need without needing more information than I have.

well yes, there is [s-final = s-initial = v*delta-t] , but there is delta-t, and only one term for v. I tried using this equation, but to solve for delta-t, I would only be using one term of velocity, what value would I use? There is also [s-final = s-initial + v-initial*delta-t +...

Homework Statement "A jet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 4.0 km, the jet is moving with a speed of 400 m/s." Homework Equations "What is the jet's acceleration, assuming it to be a constant acceleration?" The Attempt...

thanks gang, i think i figured it out... on a conceptual note...am I wrong that Julie would not know what "half the time" is going to be? On her trip TO grandma's house, she knew the distance was 100 mi, but the time it took her to get there depended on how long she was traveling at 40 or 60...

Homework Statement "Julie drives 100 mi to her Grandmother's house. On the way, she drives half the distance at 40 mph and half the distance at 60 mph. On her return trip, she drives half the time at 40 mph and half the time at 60 mph." Homework Equations a. "What is Julies average speed on...

how would that let me find the magnitude of the force? We just started this chapter and I guess the book assumes you know how to find the magnitude from the graph. I don't know how to do that.

yes. it may be multiple objects, but there is only 1 force acting on them. I'm assigned to find the magnitude of that force. "The following figure shows the acceleration of objects of different mass that experience the same force." "What is the magnitude of the force? "

I am a new university physics student doing some homework, but i cannot find the method for this problem. How do I find the magnitude of a force from an acceleration vs. mass graph? I know mass is the inverse of the slope of an acceleration vs. force graph, but I'm not sure how to do this the...