Recent content by andyman21

that order is from greatest to least, my apologies

I calculated for example the first box to be 600kg x the static coeffiecient which is 0.8. I have done this for all the boxes and my order from least to greatest was the 600 kg box being the greatest frictional force acting on it, then stacking box 2 and 3 because they had the same frictional...

Below are six crates at rest on level surfaces. The crates have different masses and the frictional coefficients [the first value is the static friction and the second is the kinetic friction] between the crates and the surfaces differ. The same external force is applied to each crate, but none...

Would i plug my answer of 5m into say d=vi+vf/2xt ( so it would be 5=20+0/2xt?)

I completely forgot to put how i figured out my answer... sorry for that ... Vi = 20 m/s Vf = 0.0 m/s d = 35 m Tr = 0.50 s a = -10 m/s^2 --> Note this must be negative, as acceleration is "acting against" your line of travel. if it isn't, your math won't work. First calculate how far you...

You are driving down the highway late one night at 20 \rm m/s when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the brakes is 0.50 s , and the maximum deceleration of your car is 10 m/s^2 . How much distance is between you and the deer when you come to a...

A "rocket car" is launched along a long straight track at t=0s. It moves with constant acceleration a1=1.2m/s2. At t=2s a second car is launched with constant acceleration a2=7.2m/s2. At what time does the second car catch up with the first? How far down the track do they meet? I...

I am sorry I guess I just don't understand on what to give you here, I apologize its my first physics class.

The three individual displacement vectors are, starting from Bobs origin, is he head north 100 mi(up y-axis), then go directly east 75 miles(right on the graph or x-axis), then drives 50 miles south(down the y-axis).

There was a similar problem that I found on this site and the guy for some reason subtracted the two vertical slopes. So i would do 100-50 miles. Then I would use those two displacements and to find the total displacement do the pathagrien theorem correct?

Bob gets in his car and drives at an average speed of 25 miles per hours (mph) for 4.0 hours due north. He then turns, and drives 75 miles directly east. At that point, Bob turns again and drives 50 miles due south and stops. Draw a diagram with a coordinate system and finds Bob's total...

I hope I am right or have a good idea, but for example a car would have a constant speed once it reaches its desired speed limit of course or the speed limit of the road. ?

In this problem I am asked, in one or two sentences, to explain what this motion diagram is and explain if its an object or a person. http://session.masteringphysics.com/problemAsset/1012700/6/jfk.Figure.01.U37EOC.jpg I have posted a jpg file here of the picture that I need to describe...