Recent content by mike98020205

A mule uses a rope to pull a box that weighs 3.0 times ten to the second Newtons across a level surface with constant velocity. The rope makes an angle of thirty degrees above the horizontal, and the tension in the rope is one times ten squared Newtons. What is the normal force of the floor on...

Two forces are applied to a car in an effort to accelerate it. one is 450N and is applied noth of west at a 10 degree angle and the other is 380N, applied north of east at a 30 degree angle. What is the resultant of these two forces? I attatched a file to provide a visual aid even though it's...

Ty so much.

I guess I'm confused on how to convert km/h to m/s squared. I understand 1min/60s=360s/1 hr but this seems different. the seconds squared ared throwing me off. I know there's a 1000 meters in a kilometer and 360 seconds in an hour. I guess I don't know how to apply these numbers. Thanks for...

They are looking for time in this problem.

Ok... What is the answer? The book says 470 seconds. I did 750000N/15000000 and got .05m/s squared for the acceleration. Then, If I divide the final speed, 85 km/h by this acceleration, I get 1700 seconds which is wrong. How do they get 4.7 times 10 to the second (470 seconds)? Help please. I...

Help, I just can't seem to get this. A freight train has a mass of 15000000 kg. If the locomotive can exert a constant pull (what is a constant pull?) of 750000 N, how long would it take to increase the speed of the train from rest to 85 km/h? (Disregard friction.)